/usr/share/doc/python-lxml/html/changes-4.2.1.html is in python-lxml-doc 4.2.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 | <?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="generator" content="Docutils 0.12: http://docutils.sourceforge.net/" />
<title>lxml changelog</title>
<link rel="stylesheet" href="style.css" type="text/css" />
</head>
<body>
<div class="document" id="lxml-changelog">
<h1 class="title">lxml changelog</h1>
<div class="section" id="id1">
<h1>4.2.1 (2018-03-21)</h1>
<div class="section" id="bugs-fixed">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1755825">LP#1755825</a>: <tt class="docutils literal">iterwalk()</tt> failed to return the 'start' event for the initial
element if a tag selector is used.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1756314">LP#1756314</a>: Failure to import 4.2.0 into PyPy due to a missing library symbol.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1727864">LP#1727864</a>, <a class="reference external" href="https://github.com/lxml/lxml/issues/258">GH#258</a>: Add "-isysroot" linker option on MacOS as needed by XCode 9.</li>
</ul>
</div>
</div>
<div class="section" id="id2">
<h1>4.2.0 (2018-03-13)</h1>
<div class="section" id="features-added">
<h2>Features added</h2>
<ul class="simple">
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/255">GH#255</a>: <tt class="docutils literal">SelectElement.value</tt> returns more standard-compliant and
browser-like defaults for non-multi-selects. If no option is selected, the
value of the first option is returned (instead of None). If multiple options
are selected, the value of the last one is returned (instead of that of the
first one). If no options are present (not standard-compliant)
<tt class="docutils literal">SelectElement.value</tt> still returns <tt class="docutils literal">None</tt>.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/261">GH#261</a>: The <tt class="docutils literal">HTMLParser()</tt> now supports the <tt class="docutils literal">huge_tree</tt> option.
Patch by stranac.</li>
</ul>
</div>
<div class="section" id="id3">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1551797">LP#1551797</a>: Some XSLT messages were not captured by the transform error log.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1737825">LP#1737825</a>: Crash at shutdown after an interrupted iterparse run with XMLSchema
validation.</li>
</ul>
</div>
<div class="section" id="other-changes">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id4">
<h1>4.1.1 (2017-11-04)</h1>
<ul class="simple">
<li>Rebuild with Cython 0.27.3 to improve support for Py3.7.</li>
</ul>
</div>
<div class="section" id="id5">
<h1>4.1.0 (2017-10-13)</h1>
<div class="section" id="id6">
<h2>Features added</h2>
<ul class="simple">
<li>ElementPath supports text predicates for current node, like "[.='text']".</li>
<li>ElementPath allows spaces in predicates.</li>
<li>Custom Element classes and XPath functions can now be registered with a
decorator rather than explicit dict assignments.</li>
<li>Static Linux wheels are now built with link time optimisation (LTO) enabled.
This should have a beneficial impact on the overall performance by providing
a tighter compiler integration between lxml and libxml2/libxslt.</li>
</ul>
</div>
<div class="section" id="id7">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1722776">LP#1722776</a>: Requesting non-Element objects like comments from a document with
<tt class="docutils literal">PythonElementClassLookup</tt> could fail with a TypeError.</li>
</ul>
</div>
</div>
<div class="section" id="id8">
<h1>4.0.0 (2017-09-17)</h1>
<div class="section" id="id9">
<h2>Features added</h2>
<ul class="simple">
<li>The ElementPath implementation is now compiled using Cython,
which speeds up the <tt class="docutils literal"><span class="pre">.find*()</span></tt> methods quite significantly.</li>
<li>The modules <tt class="docutils literal">lxml.builder</tt>, <tt class="docutils literal">lxml.html.diff</tt> and <tt class="docutils literal">lxml.html.clean</tt>
are also compiled using Cython in order to speed them up.</li>
<li><tt class="docutils literal">xmlfile()</tt> supports async coroutines using <tt class="docutils literal">async with</tt> and <tt class="docutils literal">await</tt>.</li>
<li><tt class="docutils literal">iterwalk()</tt> has a new method <tt class="docutils literal">skip_subtree()</tt> that prevents walking into
the descendants of the current element.</li>
<li><tt class="docutils literal">RelaxNG.from_rnc_string()</tt> accepts a <tt class="docutils literal">base_url</tt> argument to
allow relative resource lookups.</li>
<li>The XSLT result object has a new method <tt class="docutils literal">.write_output(file)</tt> that serialises
output data into a file according to the <tt class="docutils literal"><xsl:output></tt> configuration.</li>
</ul>
</div>
<div class="section" id="id10">
<h2>Bugs fixed</h2>
<ul>
<li><p class="first"><a class="reference external" href="https://github.com/lxml/lxml/issues/251">GH#251</a>: HTML comments were handled incorrectly by the soupparser.
Patch by mozbugbox.</p>
</li>
<li><p class="first"><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1654544">LP#1654544</a>: The html5parser no longer passes the <tt class="docutils literal">useChardet</tt> option
if the input is a Unicode string, unless explicitly requested. When parsing
files, the default is to enable it when a URL or file path is passed (because
the file is then opened in binary mode), and to disable it when reading from
a file(-like) object.</p>
<p>Note: This is a backwards incompatible change of the default configuration.
If your code parses byte strings/streams and depends on character detection,
please pass the option <tt class="docutils literal">guess_charset=True</tt> explicitly, which already worked
in older lxml versions.</p>
</li>
<li><p class="first"><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1703810">LP#1703810</a>: <tt class="docutils literal">etree.fromstring()</tt> failed to parse UTF-32 data with BOM.</p>
</li>
<li><p class="first"><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1526522">LP#1526522</a>: Some RelaxNG errors were not reported in the error log.</p>
</li>
<li><p class="first"><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1567526">LP#1567526</a>: Empty and plain text input raised a TypeError in soupparser.</p>
</li>
<li><p class="first"><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1710429">LP#1710429</a>: Uninitialised variable usage in HTML diff.</p>
</li>
<li><p class="first"><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1415643">LP#1415643</a>: The closing tags context manager in <tt class="docutils literal">xmlfile()</tt> could continue
to output end tags even after writing failed with an exception.</p>
</li>
<li><p class="first"><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1465357">LP#1465357</a>: <tt class="docutils literal">xmlfile.write()</tt> now accepts and ignores None as input argument.</p>
</li>
<li><p class="first">Compilation under Py3.7-pre failed due to a modified function signature.</p>
</li>
</ul>
</div>
<div class="section" id="id11">
<h2>Other changes</h2>
<ul class="simple">
<li>The main module source files were renamed from <tt class="docutils literal"><span class="pre">lxml.*.pyx</span></tt> to plain
<tt class="docutils literal">*.pyx</tt> (e.g. <tt class="docutils literal">etree.pyx</tt>) to simplify their handling in the build
process. Care was taken to keep the old header files as fallbacks for
code that compiles against the public C-API of lxml, but it might still
be worth validating that third-party code does not notice this change.</li>
</ul>
</div>
</div>
<div class="section" id="id12">
<h1>3.8.0 (2017-06-03)</h1>
<div class="section" id="id13">
<h2>Features added</h2>
<ul class="simple">
<li><tt class="docutils literal">ElementTree.write()</tt> has a new option <tt class="docutils literal">doctype</tt> that writes out a
doctype string before the serialisation, in the same way as <tt class="docutils literal">tostring()</tt>.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/220">GH#220</a>: <tt class="docutils literal">xmlfile</tt> allows switching output methods at an element level.
Patch by Burak Arslan.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1595781">LP#1595781</a>, <a class="reference external" href="https://github.com/lxml/lxml/issues/240">GH#240</a>: added a PyCapsule Python API and C-level API for
passing externally generated libxml2 documents into lxml.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/244">GH#244</a>: error log entries have a new property <tt class="docutils literal">path</tt> with an XPath
expression (if known, None otherwise) that points to the tree element
responsible for the error. Patch by Bob Kline.</li>
<li>The namespace prefix mapping that can be used in ElementPath now injects
a default namespace when passing a None prefix.</li>
</ul>
</div>
<div class="section" id="id14">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/238">GH#238</a>: Character escapes were not hex-encoded in the <tt class="docutils literal">xmlfile</tt> serialiser.
Patch by matejcik.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/229">GH#229</a>: fix for externally created XML documents. Patch by Theodore Dubois.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1665241">LP#1665241</a>, <a class="reference external" href="https://github.com/lxml/lxml/issues/228">GH#228</a>: Form data handling in lxml.html no longer strips the
option values specified in form attributes but only the text values.
Patch by Ashish Kulkarni.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1551797">LP#1551797</a>: revert previous fix for XSLT error logging as it breaks
multi-threaded XSLT processing.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1673355">LP#1673355</a>, <a class="reference external" href="https://github.com/lxml/lxml/issues/233">GH#233</a>: <tt class="docutils literal">fromstring()</tt> html5parser failed to parse byte strings.</li>
</ul>
</div>
<div class="section" id="id16">
<h2>Other changes</h2>
<ul class="simple">
<li>The previously undocumented <tt class="docutils literal">docstring</tt> option in <tt class="docutils literal">ElementTree.write()</tt>
produces a deprecation warning and will eventually be removed.</li>
</ul>
</div>
</div>
<div class="section" id="id17">
<h1>3.7.4 (2017-??-??)</h1>
<div class="section" id="id18">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1551797">LP#1551797</a>: revert previous fix for XSLT error logging as it breaks
multi-threaded XSLT processing.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1673355">LP#1673355</a>, <a class="reference external" href="https://github.com/lxml/lxml/issues/233">GH#233</a>: <tt class="docutils literal">fromstring()</tt> html5parser failed to parse byte strings.</li>
</ul>
</div>
</div>
<div class="section" id="id22">
<h1>3.7.3 (2017-02-18)</h1>
<div class="section" id="id23">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/218">GH#218</a> was ineffective in Python 3.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/222">GH#222</a>: <tt class="docutils literal">lxml.html.submit_form()</tt> failed in Python 3.
Patch by Jakub Wilk.</li>
</ul>
</div>
</div>
<div class="section" id="id24">
<h1>3.7.2 (2017-01-08)</h1>
<ul class="simple">
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/220">GH#220</a>: <tt class="docutils literal">xmlfile</tt> allows switching output methods at an element level.
Patch by Burak Arslan.</li>
</ul>
<div class="section" id="id26">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Work around installation problems in recent Python 2.7 versions
due to FTP download failures.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/219">GH#219</a>: <tt class="docutils literal">xmlfile.element()</tt> was not properly quoting attribute values.
Patch by Burak Arslan.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/218">GH#218</a>: <tt class="docutils literal">xmlfile.element()</tt> was not properly escaping text content of
script/style tags. Patch by Burak Arslan.</li>
</ul>
</div>
</div>
<div class="section" id="id28">
<h1>3.7.1 (2016-12-23)</h1>
<ul class="simple">
<li>No source changes, issued only to solve problems with the
binary packages released for 3.7.0.</li>
</ul>
</div>
<div class="section" id="id29">
<h1>3.7.0 (2016-12-10)</h1>
<div class="section" id="id30">
<h2>Features added</h2>
<ul class="simple">
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/217">GH#217</a>: <tt class="docutils literal">XMLSyntaxError</tt> now behaves more like its <tt class="docutils literal">SyntaxError</tt>
baseclass. Patch by Philipp A.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/216">GH#216</a>: <tt class="docutils literal">HTMLParser()</tt> now supports the same <tt class="docutils literal">collect_ids</tt> parameter
as <tt class="docutils literal">XMLParser()</tt>. Patch by Burak Arslan.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/210">GH#210</a>: Allow specifying a serialisation method in <tt class="docutils literal">xmlfile.write()</tt>.
Patch by Burak Arslan.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/203">GH#203</a>: New option <tt class="docutils literal">default_doctype</tt> in <tt class="docutils literal">HTMLParser</tt> that allows
disabling the automatic doctype creation. Patch by Shadab Zafar.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/201">GH#201</a>: Calling the method <tt class="docutils literal"><span class="pre">.set('attrname')</span></tt> without value argument
(or <tt class="docutils literal">None</tt>) on HTML elements creates an attribute without value that
serialises like <tt class="docutils literal"><div <span class="pre">attrname></div></span></tt>. Patch by Daniel Holth.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/197">GH#197</a>: Ignore form input fields in <tt class="docutils literal">form_values()</tt> when they are
marked as <tt class="docutils literal">disabled</tt> in HTML. Patch by Kristian Klemon.</li>
</ul>
</div>
<div class="section" id="id31">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/206">GH#206</a>: File name and line number were missing from XSLT error messages.
Patch by Marcus Brinkmann.</li>
</ul>
</div>
<div class="section" id="id32">
<h2>Other changes</h2>
<ul class="simple">
<li>Log entries no longer allow anything but plain string objects as message text
and file name.</li>
<li><tt class="docutils literal">zlib</tt> is included in the list of statically built libraries.</li>
</ul>
</div>
</div>
<div class="section" id="id33">
<h1>3.6.4 (2016-08-20)</h1>
<ul class="simple">
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/204">GH#204</a>, <a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1614693">LP#1614693</a>: build fix for MacOS-X.</li>
</ul>
</div>
<div class="section" id="id34">
<h1>3.6.3 (2016-08-18)</h1>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1614603">LP#1614603</a>: change linker flags to build multi-linux wheels</li>
</ul>
</div>
<div class="section" id="id35">
<h1>3.6.2 (2016-08-18)</h1>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1614603">LP#1614603</a>: release without source changes to provide cleanly built Linux wheels</li>
</ul>
</div>
<div class="section" id="id37">
<h1>3.6.1 (2016-07-24)</h1>
<div class="section" id="id38">
<h2>Features added</h2>
<ul class="simple">
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/180">GH#180</a>: Separate option <tt class="docutils literal">inline_style</tt> for Cleaner that only removes <tt class="docutils literal">style</tt>
attributes instead of all styles. Patch by Christian Pedersen.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/196">GH#196</a>: Windows build support for Python 3.5. Contribution by Maximilian Hils.</li>
</ul>
</div>
<div class="section" id="id39">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/199">GH#199</a>: Exclude <tt class="docutils literal">file</tt> fields from <tt class="docutils literal">FormElement.form_values</tt> (as browsers do).
Patch by Tomas Divis.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/198">GH#198</a>, <a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1568167">LP#1568167</a>: Try to provide base URL from <tt class="docutils literal">Resolver.resolve_string()</tt>.
Patch by Michael van Tellingen.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/191">GH#191</a>: More accurate float serialisation in <tt class="docutils literal">objectify.FloatElement</tt>.
Patch by Holger Joukl.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1551797">LP#1551797</a>: Repair XSLT error logging. Patch by Marcus Brinkmann.</li>
</ul>
</div>
</div>
<div class="section" id="id41">
<h1>3.6.0 (2016-03-17)</h1>
<div class="section" id="id42">
<h2>Features added</h2>
<ul class="simple">
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/187">GH#187</a>: Now supports (only) version 5.x and later of PyPy.
Patch by Armin Rigo.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/181">GH#181</a>: Direct support for <tt class="docutils literal">.rnc</tt> files in <cite>RelaxNG()</cite> if <tt class="docutils literal">rnc2rng</tt>
is installed. Patch by Dirkjan Ochtman.</li>
</ul>
</div>
<div class="section" id="id43">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/189">GH#189</a>: Static builds honour FTP proxy configurations when downloading
the external libs. Patch by Youhei Sakurai.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/186">GH#186</a>: Soupparser failed to process entities in Python 3.x.
Patch by Duncan Morris.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/185">GH#185</a>: Rare encoding related <tt class="docutils literal">TypeError</tt> on import was fixed.
Patch by Petr Demin.</li>
</ul>
</div>
</div>
<div class="section" id="id44">
<h1>3.5.0 (2015-11-13)</h1>
<div class="section" id="id45">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Unicode string results failed XPath queries in PyPy.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1497051">LP#1497051</a>: HTML target parser failed to terminate on exceptions
and continued parsing instead.</li>
<li>Deprecated API usage in doctestcompare.</li>
</ul>
</div>
</div>
<div class="section" id="b1-2015-09-18">
<h1>3.5.0b1 (2015-09-18)</h1>
<div class="section" id="id46">
<h2>Features added</h2>
<ul class="simple">
<li><tt class="docutils literal">cleanup_namespaces()</tt> accepts a new argument <tt class="docutils literal">keep_ns_prefixes</tt>
that does not remove definitions of the provided prefix-namespace
mapping from the tree.</li>
<li><tt class="docutils literal">cleanup_namespaces()</tt> accepts a new argument <tt class="docutils literal">top_nsmap</tt> that
moves definitions of the provided prefix-namespace mapping to the
top of the tree.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1490451">LP#1490451</a>: <tt class="docutils literal">Element</tt> objects gained a <tt class="docutils literal">cssselect()</tt> method as
known from <tt class="docutils literal">lxml.html</tt>. Patch by Simon Sapin.</li>
<li>API functions and methods behave and look more like Python functions,
which allows introspection on them etc. One side effect to be aware of
is that the functions now bind as methods when assigned to a class
variable. A quick fix is to wrap them in <tt class="docutils literal">staticmethod()</tt> (as for
normal Python functions).</li>
<li>ISO-Schematron support gained an option <tt class="docutils literal">error_finder</tt> that allows
passing a filter function for picking validation errors from reports.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1243600">LP#1243600</a>: Elements in <tt class="docutils literal">lxml.html</tt> gained a <tt class="docutils literal">classes</tt> property
that provides a set-like interface to the <tt class="docutils literal">class</tt> attribute.
Original patch by masklinn.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1341964">LP#1341964</a>: The soupparser now handles DOCTYPE declarations, comments
and processing instructions outside of the root element.
Patch by Olli Pottonen.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1421512">LP#1421512</a>: The <tt class="docutils literal">docinfo</tt> of a tree was made editable to allow
setting and removing the public ID and system ID of the DOCTYPE.
Patch by Olli Pottonen.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1442427">LP#1442427</a>: More work-arounds for quirks and bugs in pypy and pypy3.</li>
<li><tt class="docutils literal">lxml.html.soupparser</tt> now uses BeautifulSoup version 4 instead
of version 3 if available.</li>
</ul>
</div>
<div class="section" id="id47">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Memory errors that occur during tree adaptations (e.g. moving subtrees
to foreign documents) could leave the tree in a crash prone state.</li>
<li>Calling <tt class="docutils literal">process_children()</tt> in an XSLT extension element without
an <tt class="docutils literal">output_parent</tt> argument failed with a <tt class="docutils literal">TypeError</tt>.
Fix by Jens Tröger.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/162">GH#162</a>: Image data in HTML <tt class="docutils literal">data</tt> URLs is considered safe and
no longer removed by <tt class="docutils literal">lxml.html.clean</tt> JavaScript cleaner.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/166">GH#166</a>: Static build could link libraries in wrong order.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/172">GH#172</a>: Rely a bit more on libxml2 for encoding detection rather than
rolling our own in some cases. Patch by Olli Pottonen.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/159">GH#159</a>: Validity checks for names and string content were tightened
to detect the use of illegal characters early. Patch by Olli Pottonen.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1421921">LP#1421921</a>: Comments/PIs before the DOCTYPE declaration were not
serialised. Patch by Olli Pottonen.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/659367">LP#659367</a>: Some HTML DOCTYPE declarations were not serialised.
Patch by Olli Pottonen.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1238503">LP#1238503</a>: lxml.doctestcompare is now consistent with stdlib's doctest
in how it uses <tt class="docutils literal">+</tt> and <tt class="docutils literal">-</tt> to refer to unexpected and missing output.</li>
<li>Empty prefixes are explicitly rejected when a namespace mapping is used
with ElementPath to avoid hiding bugs in user code.</li>
<li>Several problems with PyPy were fixed by switching to Cython 0.23.</li>
</ul>
</div>
</div>
<div class="section" id="id48">
<h1>3.4.4 (2015-04-25)</h1>
<div class="section" id="id49">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>An ElementTree compatibility test added in lxml 3.4.3 that failed in
Python 3.4+ was removed again.</li>
</ul>
</div>
</div>
<div class="section" id="id50">
<h1>3.4.3 (2015-04-15)</h1>
<div class="section" id="id51">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Expression cache in ElementPath was ignored. Fix by Changaco.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1426868">LP#1426868</a>: Passing a default namespace and a prefixed namespace mapping
as nsmap into <tt class="docutils literal">xmlfile.element()</tt> raised a <tt class="docutils literal">TypeError</tt>.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1421927">LP#1421927</a>: DOCTYPE system URLs were incorrectly quoted when containing
double quotes. Patch by Olli Pottonen.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1419354">LP#1419354</a>: meta-redirect URLs were incorrectly processed by
<tt class="docutils literal">iterlinks()</tt> if preceded by whitespace.</li>
</ul>
</div>
</div>
<div class="section" id="id52">
<h1>3.4.2 (2015-02-07)</h1>
<div class="section" id="id53">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1415907">LP#1415907</a>: Crash when creating an XMLSchema from a non-root element
of an XML document.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1369362">LP#1369362</a>: HTML cleaning failed when hitting processing instructions
with pseudo-attributes.</li>
<li><tt class="docutils literal">CDATA()</tt> wrapped content was rejected for tail text.</li>
<li>CDATA sections were not serialised as tail text of the top-level element.</li>
</ul>
</div>
</div>
<div class="section" id="id54">
<h1>3.4.1 (2014-11-20)</h1>
<div class="section" id="id55">
<h2>Features added</h2>
<ul class="simple">
<li>New <tt class="docutils literal">htmlfile</tt> HTML generator to accompany the incremental <tt class="docutils literal">xmlfile</tt>
serialisation API. Patch by Burak Arslan.</li>
</ul>
</div>
<div class="section" id="id56">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><tt class="docutils literal">lxml.sax.ElementTreeContentHandler</tt> did not initialise its superclass.</li>
</ul>
</div>
</div>
<div class="section" id="id57">
<h1>3.4.0 (2014-09-10)</h1>
<div class="section" id="id58">
<h2>Features added</h2>
<ul class="simple">
<li><tt class="docutils literal">xmlfile(buffered=False)</tt> disables output buffering and flushes the
content after each API operation (starting/ending element blocks or writes).
A new method <tt class="docutils literal">xf.flush()</tt> can alternatively be used to explicitly flush
the output.</li>
<li><tt class="docutils literal">lxml.html.document_fromstring</tt> has a new option <tt class="docutils literal">ensure_head_body=True</tt>
which will add an empty head and/or body element to the result document if
missing.</li>
<li><tt class="docutils literal">lxml.html.iterlinks</tt> now returns links inside meta refresh tags.</li>
<li>New <tt class="docutils literal">XMLParser</tt> option <tt class="docutils literal">collect_ids=False</tt> to disable ID hash table
creation. This can substantially speed up parsing of documents with many
different IDs that are not used.</li>
<li>The parser uses per-document hash tables for XML IDs. This reduces the
load of the global parser dict and speeds up parsing for documents with
many different IDs.</li>
<li><tt class="docutils literal">ElementTree.getelementpath(element)</tt> returns a structural ElementPath
expression for the given element, which can be used for lookups later.</li>
<li><tt class="docutils literal">xmlfile()</tt> accepts a new argument <tt class="docutils literal">close=True</tt> to close file(-like)
objects after writing to them. Before, <tt class="docutils literal">xmlfile()</tt> only closed the file
if it had opened it internally.</li>
<li>Allow "bytearray" type for ASCII text input.</li>
</ul>
</div>
<div class="section" id="id59">
<h2>Bugs fixed</h2>
</div>
<div class="section" id="id60">
<h2>Other changes</h2>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/400588">LP#400588</a>: decoding errors have become hard errors even in recovery mode.
Previously, they could lead to an internal tree representation in a mixed
encoding state, which lead to very late errors or even silently incorrect
behaviour during tree traversal or serialisation.</li>
<li>Requires Python 2.6, 2.7, 3.2 or later. No longer supports
Python 2.4, 2.5 and 3.1, use lxml 3.3.x for those.</li>
<li>Requires libxml2 2.7.0 or later and libxslt 1.1.23 or later,
use lxml 3.3.x with older versions.</li>
</ul>
</div>
</div>
<div class="section" id="id61">
<h1>3.3.6 (2014-08-28)</h1>
<div class="section" id="id62">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Prevent tree cycle creation when adding Elements as siblings.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1361948">LP#1361948</a>: crash when deallocating Element siblings without parent.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1354652">LP#1354652</a>: crash when traversing internally loaded documents in XSLT
extension functions.</li>
</ul>
</div>
</div>
<div class="section" id="id63">
<h1>3.3.5 (2014-04-18)</h1>
<div class="section" id="id64">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>HTML cleaning could fail to strip javascript links that mix control
characters into the link scheme.</li>
</ul>
</div>
</div>
<div class="section" id="id65">
<h1>3.3.4 (2014-04-03)</h1>
<div class="section" id="id66">
<h2>Features added</h2>
<ul class="simple">
<li>Source line numbers above 65535 are available on Elements when
using libxml2 2.9 or later.</li>
</ul>
</div>
<div class="section" id="id67">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><tt class="docutils literal">lxml.html.fragment_fromstring()</tt> failed for bytes input in Py3.</li>
</ul>
</div>
<div class="section" id="id68">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id69">
<h1>3.3.3 (2014-03-04)</h1>
<div class="section" id="id70">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1287118">LP#1287118</a>: Crash when using Element subtypes with <tt class="docutils literal">__slots__</tt>.</li>
</ul>
</div>
<div class="section" id="id71">
<h2>Other changes</h2>
<ul class="simple">
<li>The internal classes <tt class="docutils literal">_LogEntry</tt> and <tt class="docutils literal">_Attrib</tt> can no longer be
subclassed from Python code.</li>
</ul>
</div>
</div>
<div class="section" id="id72">
<h1>3.3.2 (2014-02-26)</h1>
<div class="section" id="id73">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>The properties <tt class="docutils literal">resolvers</tt> and <tt class="docutils literal">version</tt>, as well as the methods
<tt class="docutils literal">set_element_class_lookup()</tt> and <tt class="docutils literal">makeelement()</tt>, were lost from
<tt class="docutils literal">iterparse</tt> objects in 3.3.0.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1222132">LP#1222132</a>: instances of <tt class="docutils literal">XMLSchema</tt>, <tt class="docutils literal">Schematron</tt> and <tt class="docutils literal">RelaxNG</tt>
did not clear their local <tt class="docutils literal">error_log</tt> before running a validation.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1238500">LP#1238500</a>: lxml.doctestcompare mixed up "expected" and "actual" in
attribute values.</li>
<li>Some file I/O tests were failing in MS-Windows due to non-portable temp
file usage. Initial patch by Gabi Davar.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/910014">LP#910014</a>: duplicate IDs in a document were not reported by DTD validation.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1185332">LP#1185332</a>: <tt class="docutils literal"><span class="pre">tostring(method="html")</span></tt> did not use HTML serialisation
semantics for trailing tail text. Initial patch by Sylvain Viollon.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1281139">LP#1281139</a>: <tt class="docutils literal">.attrib</tt> value of Comments lost its mutation methods
in 3.3.0. Even though it is empty and immutable, it should still
provide the same interface as that returned for Elements.</li>
</ul>
</div>
</div>
<div class="section" id="id74">
<h1>3.3.1 (2014-02-12)</h1>
<div class="section" id="id75">
<h2>Features added</h2>
</div>
<div class="section" id="id76">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1014290">LP#1014290</a>: HTML documents parsed with <tt class="docutils literal">parser.feed()</tt> failed to find
elements during tag iteration.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1273709">LP#1273709</a>: Building in PyPy failed due to missing support for
<tt class="docutils literal">PyUnicode_Compare()</tt> and <tt class="docutils literal"><span class="pre">PyByteArray_*()</span></tt> in PyPy's C-API.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1274413">LP#1274413</a>: Compilation in MSVC failed due to missing "stdint.h" standard
header file.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1274118">LP#1274118</a>: iterparse() failed to parse BOM prefixed files.</li>
</ul>
</div>
<div class="section" id="id77">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id78">
<h1>3.3.0 (2014-01-26)</h1>
<div class="section" id="id79">
<h2>Features added</h2>
</div>
<div class="section" id="id80">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>The heuristic that distinguishes file paths from URLs was tightened
to produce less false negatives.</li>
</ul>
</div>
<div class="section" id="id81">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="beta5-2014-01-18">
<h1>3.3.0beta5 (2014-01-18)</h1>
<div class="section" id="id82">
<h2>Features added</h2>
<ul class="simple">
<li>The PEP 393 unicode parsing support gained a fallback for wchar strings
which might still be somewhat common on Windows systems.</li>
</ul>
</div>
<div class="section" id="id83">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Several error handling problems were fixed throughout the code base that
could previously lead to exceptions being silently swallowed or not
properly reported.</li>
<li>The C-API function <tt class="docutils literal">appendChild()</tt> is now deprecated as it does not
propagate exceptions (its return type is <tt class="docutils literal">void</tt>). The new function
<tt class="docutils literal">appendChildToElement()</tt> was added as a safe replacement.</li>
<li>Passing a string into <tt class="docutils literal">fromstringlist()</tt> raises an exception instead of
parsing the string character by character.</li>
</ul>
</div>
<div class="section" id="id84">
<h2>Other changes</h2>
<ul class="simple">
<li>Document cleanup code was simplified using the new GC features in
Cython 0.20.</li>
</ul>
</div>
</div>
<div class="section" id="beta4-2014-01-12">
<h1>3.3.0beta4 (2014-01-12)</h1>
<div class="section" id="id85">
<h2>Features added</h2>
</div>
<div class="section" id="id86">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>The (empty) value returned by the <tt class="docutils literal">attrib</tt> property of Entity and Comment
objects was mutable.</li>
<li>Element class lookup wasn't available for the new pull parsers or when using
a custom parser target.</li>
<li>Setting Element attributes on instantiation with both the <tt class="docutils literal">attrib</tt> argument
and keyword arguments could modify the mapping passed as <tt class="docutils literal">attrib</tt>.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1266171">LP#1266171</a>: DTDs instantiated from internal/external subsets (i.e. through
the docinfo property) lost their attribute declarations.</li>
</ul>
</div>
<div class="section" id="id87">
<h2>Other changes</h2>
<ul class="simple">
<li>Built with Cython 0.20pre (gitrev 012ae82eb) to prepare support for
Python 3.4.</li>
</ul>
</div>
</div>
<div class="section" id="beta3-2014-01-02">
<h1>3.3.0beta3 (2014-01-02)</h1>
<div class="section" id="id88">
<h2>Features added</h2>
<ul class="simple">
<li>Unicode string parsing was optimised for Python 3.3 (PEP 393).</li>
</ul>
</div>
<div class="section" id="id89">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>HTML parsing of Unicode strings could misdecode the input on some platforms.</li>
<li>Crash in xmlfile() when closing open elements out of order in an error case.</li>
</ul>
</div>
<div class="section" id="id90">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="beta2-2013-12-20">
<h1>3.3.0beta2 (2013-12-20)</h1>
<div class="section" id="id91">
<h2>Features added</h2>
<ul class="simple">
<li><tt class="docutils literal">iterparse()</tt> supports the <tt class="docutils literal">recover</tt> option.</li>
</ul>
</div>
<div class="section" id="id92">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash in <tt class="docutils literal">iterparse()</tt> for HTML parsing.</li>
<li>Crash in target parsing with attributes.</li>
</ul>
</div>
<div class="section" id="id93">
<h2>Other changes</h2>
<ul class="simple">
<li>The safety check in the read-only tree implementation (e.g. used by
<tt class="docutils literal">PythonElementClassLookup</tt>) raises a more appropriate <tt class="docutils literal">ReferenceError</tt>
for illegal access after tree disposal instead of an <tt class="docutils literal">AssertionError</tt>.
This should only impact test code that specifically checks the original
behaviour.</li>
</ul>
</div>
</div>
<div class="section" id="beta1-2013-12-12">
<h1>3.3.0beta1 (2013-12-12)</h1>
<div class="section" id="id94">
<h2>Features added</h2>
<ul class="simple">
<li>New option <tt class="docutils literal">handle_failures</tt> in <tt class="docutils literal">make_links_absolute()</tt> and
<tt class="docutils literal">resolve_base_href()</tt> (lxml.html) that enables ignoring or
discarding links that fail to parse as URLs.</li>
<li>New parser classes <tt class="docutils literal">XMLPullParser</tt> and <tt class="docutils literal">HTMLPullParser</tt> for
incremental parsing, as implemented for ElementTree in Python 3.4.</li>
<li><tt class="docutils literal">iterparse()</tt> enables recovery mode by default for HTML parsing
(<tt class="docutils literal">html=True</tt>).</li>
</ul>
</div>
<div class="section" id="id95">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1255132">LP#1255132</a>: crash when trying to run validation over non-Element (e.g.
comment or PI).</li>
<li>Error messages in the log and in exception messages that originated
from libxml2 could accidentally be picked up from preceding warnings
instead of the actual error.</li>
<li>The <tt class="docutils literal">ElementMaker</tt> in lxml.objectify did not accept a dict as
argument for adding attributes to the element it's building. This
works as in lxml.builder now.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1228881">LP#1228881</a>: <tt class="docutils literal">repr(XSLTAccessControl)</tt> failed in Python 3.</li>
<li>Raise <tt class="docutils literal">ValueError</tt> when trying to append an Element to itself or
to one of its own descendants, instead of running into an infinite
loop.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1206077">LP#1206077</a>: htmldiff discarded whitespace from the output.</li>
<li>Compressed plain-text serialisation to file-like objects was broken.</li>
<li>lxml.html.formfill: Fix textarea form filling.
The textarea used to be cleared before the new content was set,
which removed the name attribute.</li>
</ul>
</div>
<div class="section" id="id96">
<h2>Other changes</h2>
<ul class="simple">
<li>Some basic API classes use freelists internally for faster
instantiation. This can speed up some <tt class="docutils literal">iterparse()</tt> scenarios,
for example.</li>
<li><tt class="docutils literal">iterparse()</tt> was rewritten to use the new <tt class="docutils literal">*PullParser</tt>
classes internally instead of being a parser itself.</li>
</ul>
</div>
</div>
<div class="section" id="id97">
<h1>3.2.5 (2014-01-02)</h1>
<div class="section" id="id98">
<h2>Features added</h2>
</div>
<div class="section" id="id99">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash in xmlfile() when closing open elements out of order in an error case.</li>
<li>Crash in target parsing with attributes.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1255132">LP#1255132</a>: crash when trying to run validation over non-Element (e.g.
comment or PI).</li>
</ul>
</div>
<div class="section" id="id101">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id102">
<h1>3.2.4 (2013-11-07)</h1>
<div class="section" id="id103">
<h2>Features added</h2>
</div>
<div class="section" id="id104">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Memory leak when creating an XPath evaluator in a thread.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1228881">LP#1228881</a>: <tt class="docutils literal">repr(XSLTAccessControl)</tt> failed in Python 3.</li>
<li>Raise <tt class="docutils literal">ValueError</tt> when trying to append an Element to itself or
to one of its own descendants.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1206077">LP#1206077</a>: htmldiff discarded whitespace from the output.</li>
<li>Compressed plain-text serialisation to file-like objects was broken.</li>
</ul>
</div>
<div class="section" id="id107">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id108">
<h1>3.2.3 (2013-07-28)</h1>
<div class="section" id="id109">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Fix support for Python 2.4 which was lost in 3.2.2.</li>
</ul>
</div>
</div>
<div class="section" id="id110">
<h1>3.2.2 (2013-07-28)</h1>
<div class="section" id="id111">
<h2>Features added</h2>
</div>
<div class="section" id="id112">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1185701">LP#1185701</a>: spurious XMLSyntaxError after finishing iterparse().</li>
<li>Crash in lxml.objectify during xsi annotation.</li>
</ul>
</div>
<div class="section" id="id113">
<h2>Other changes</h2>
<ul class="simple">
<li>Return values of user provided element class lookup methods are now
validated against the type of the XML node they represent to prevent
API class mismatches.</li>
</ul>
</div>
</div>
<div class="section" id="id114">
<h1>3.2.1 (2013-05-11)</h1>
<div class="section" id="id115">
<h2>Features added</h2>
<ul class="simple">
<li>The methods <tt class="docutils literal">apply_templates()</tt> and <tt class="docutils literal">process_children()</tt> of XSLT
extension elements have gained two new boolean options <tt class="docutils literal">elements_only</tt>
and <tt class="docutils literal">remove_blank_text</tt> that discard either all strings or whitespace-only
strings from the result list.</li>
</ul>
</div>
<div class="section" id="id116">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>When moving Elements to another tree, the namespace cleanup mechanism
no longer drops namespace prefixes from attributes for which it finds
a default namespace declaration, to prevent them from appearing as
unnamespaced attributes after serialisation.</li>
<li>Returning non-type objects from a custom class lookup method could lead
to a crash.</li>
<li>Instantiating and using subtypes of Comments and ProcessingInstructions
crashed.</li>
</ul>
</div>
<div class="section" id="id117">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id118">
<h1>3.2.0 (2013-04-28)</h1>
<div class="section" id="id119">
<h2>Features added</h2>
</div>
<div class="section" id="id120">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/690319">LP#690319</a>: Leading whitespace could change the behaviour of the string
parsing functions in <tt class="docutils literal">lxml.html</tt>.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/599318">LP#599318</a>: The string parsing functions in <tt class="docutils literal">lxml.html</tt> are more robust
in the face of uncommon HTML content like framesets or missing body tags.
Patch by Stefan Seelmann.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/712941">LP#712941</a>: I/O errors while trying to access files with paths that contain
non-ASCII characters could raise <tt class="docutils literal">UnicodeDecodeError</tt> instead of properly
reporting the <tt class="docutils literal">IOError</tt>.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/673205">LP#673205</a>: Parsing from in-memory strings disabled network access in the
default parser and made subsequent attempts to parse from a URL fail.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/971754">LP#971754</a>: lxml.html.clean appends 'nofollow' to 'rel' attributes instead
of overwriting the current value.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/715687">LP#715687</a>: lxml.html.clean no longer discards scripts that are explicitly
allowed by the user provided whitelist. Patch by Christine Koppelt.</li>
</ul>
</div>
<div class="section" id="id121">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id122">
<h1>3.1.2 (2013-04-12)</h1>
<div class="section" id="id123">
<h2>Features added</h2>
</div>
<div class="section" id="id124">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1136509">LP#1136509</a>: Passing attributes through the namespace-unaware API of
the sax bridge (i.e. the <tt class="docutils literal">handler.startElement()</tt> method) failed
with a <tt class="docutils literal">TypeError</tt>. Patch by Mike Bayer.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1123074">LP#1123074</a>: Fix serialisation error in XSLT output when converting
the result tree to a Unicode string.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/105">GH#105</a>: Replace illegal usage of <tt class="docutils literal">xmlBufLength()</tt> in libxml2 2.9.0
by properly exported API function <tt class="docutils literal">xmlBufUse()</tt>.</li>
</ul>
</div>
<div class="section" id="id125">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id126">
<h1>3.1.1 (2013-03-29)</h1>
<div class="section" id="id127">
<h2>Features added</h2>
</div>
<div class="section" id="id128">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1160386">LP#1160386</a>: Write access to <tt class="docutils literal">lxml.html.FormElement.fields</tt> raised
an AttributeError in Py3.</li>
<li>Illegal memory access during cleanup in incremental xmlfile writer.</li>
</ul>
</div>
<div class="section" id="id129">
<h2>Other changes</h2>
<ul class="simple">
<li>The externally useless class <tt class="docutils literal">lxml.etree._BaseParser</tt> was removed
from the module dict.</li>
</ul>
</div>
</div>
<div class="section" id="id130">
<h1>3.1.0 (2013-02-10)</h1>
<div class="section" id="id131">
<h2>Features added</h2>
<ul class="simple">
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/89">GH#89</a>: lxml.html.clean allows overriding the set of attributes that it
considers 'safe'. Patch by Francis Devereux.</li>
</ul>
</div>
<div class="section" id="id132">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1104370">LP#1104370</a>: <tt class="docutils literal">copy.copy(el.attrib)</tt> raised an exception. It now returns
a copy of the attributes as a plain Python dict.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/95">GH#95</a>: When used with namespace prefixes, the <tt class="docutils literal"><span class="pre">el.find*()</span></tt> methods
always used the first namespace mapping that was provided for each
path expression instead of using the one that was actually passed
in for the current run.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1092521">LP#1092521</a>, <a class="reference external" href="https://github.com/lxml/lxml/issues/91">GH#91</a>: Fix undefined C symbol in Python runtimes compiled
without threading support. Patch by Ulrich Seidl.</li>
</ul>
</div>
<div class="section" id="id133">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="beta1-2012-12-21">
<h1>3.1beta1 (2012-12-21)</h1>
<div class="section" id="id134">
<h2>Features added</h2>
<ul class="simple">
<li>New build-time option <tt class="docutils literal"><span class="pre">--with-unicode-strings</span></tt> for Python 2 that
makes the API always return Unicode strings for names and text
instead of byte strings for plain ASCII content.</li>
<li>New incremental XML file writing API <tt class="docutils literal">etree.xmlfile()</tt>.</li>
<li>E factory in lxml.objectify is callable to simplify the creation of
tags with non-identifier names without having to resort to getattr().</li>
</ul>
</div>
<div class="section" id="id135">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>When starting from a non-namespaced element in lxml.objectify, searching
for a child without explicitly specifying a namespace incorrectly found
namespaced elements with the requested local name, instead of restricting
the search to non-namespaced children.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/85">GH#85</a>: Deprecation warnings were fixed for Python 3.x.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/33">GH#33</a>: lxml.html.fromstring() failed to accept bytes input in Py3.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1080792">LP#1080792</a>: Static build of libxml2 2.9.0 failed due to missing file.</li>
</ul>
</div>
<div class="section" id="id136">
<h2>Other changes</h2>
<ul class="simple">
<li>The externally useless class <tt class="docutils literal">_ObjectifyElementMakerCaller</tt> was
removed from the module API of lxml.objectify.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1075622">LP#1075622</a>: lxml.builder is faster for adding text to elements with
many children. Patch by Anders Hammarquist.</li>
</ul>
</div>
</div>
<div class="section" id="id137">
<h1>3.0.2 (2012-12-14)</h1>
<div class="section" id="id138">
<h2>Features added</h2>
</div>
<div class="section" id="id139">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Fix crash during interpreter shutdown by switching to Cython 0.17.3 for building.</li>
</ul>
</div>
<div class="section" id="id140">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id141">
<h1>3.0.1 (2012-10-14)</h1>
<div class="section" id="id142">
<h2>Features added</h2>
</div>
<div class="section" id="id143">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1065924">LP#1065924</a>: Element proxies could disappear during garbage collection
in PyPy without proper cleanup.</li>
<li><a class="reference external" href="https://github.com/lxml/lxml/issues/71">GH#71</a>: Failure to work with libxml2 2.6.x.</li>
<li><a class="reference external" href="https://bugs.launchpad.net/lxml/+bug/1065139">LP#1065139</a>: static MacOS-X build failed in Py3.</li>
</ul>
</div>
<div class="section" id="id144">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id145">
<h1>3.0 (2012-10-08)</h1>
<div class="section" id="id146">
<h2>Features added</h2>
</div>
<div class="section" id="id147">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>End-of-file handling was incorrect in iterparse() when reading from
a low-level C file stream and failed in libxml2 2.9.0 due to its
improved consistency checks.</li>
</ul>
</div>
<div class="section" id="id148">
<h2>Other changes</h2>
<ul class="simple">
<li>The build no longer uses Cython by default unless the generated C files
are missing. To use Cython, pass the option "--with-cython". To ignore
the fatal build error when Cython is required but not available (e.g. to
run special setup.py commands that do not actually run a build), pass
"--without-cython".</li>
</ul>
</div>
</div>
<div class="section" id="beta1-2012-09-26">
<h1>3.0beta1 (2012-09-26)</h1>
<div class="section" id="id149">
<h2>Features added</h2>
<ul class="simple">
<li>Python level access to (optional) libxml2 memory debugging features
to simplify debugging of memory leaks etc.</li>
</ul>
</div>
<div class="section" id="id150">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Fix a memory leak in XPath by switching to Cython 0.17.1.</li>
<li>Some tests were adapted to work with PyPy.</li>
</ul>
</div>
<div class="section" id="id151">
<h2>Other changes</h2>
<ul class="simple">
<li>The code was adapted to work with the upcoming libxml2 2.9.0 release.</li>
</ul>
</div>
</div>
<div class="section" id="alpha2-2012-08-23">
<h1>3.0alpha2 (2012-08-23)</h1>
<div class="section" id="id152">
<h2>Features added</h2>
<ul class="simple">
<li>The <tt class="docutils literal">.iter()</tt> method of elements now accepts <tt class="docutils literal">tag</tt> arguments like
<tt class="docutils literal"><span class="pre">"{*}name"</span></tt> to search for elements with a given local name in any
namespace. With this addition, all combinations of wildcards now work
as expected:
<tt class="docutils literal">"{ns}name"</tt>, <tt class="docutils literal"><span class="pre">"{}name"</span></tt>, <tt class="docutils literal"><span class="pre">"{*}name"</span></tt>, <tt class="docutils literal"><span class="pre">"{ns}*"</span></tt>, <tt class="docutils literal"><span class="pre">"{}*"</span></tt>
and <tt class="docutils literal"><span class="pre">"{*}*"</span></tt>. Note that <tt class="docutils literal">"name"</tt> is equivalent to <tt class="docutils literal"><span class="pre">"{}name"</span></tt>,
but <tt class="docutils literal">"*"</tt> is <tt class="docutils literal"><span class="pre">"{*}*"</span></tt>.
The same change applies to the <tt class="docutils literal">.getiterator()</tt>, <tt class="docutils literal">.itersiblings()</tt>,
<tt class="docutils literal">.iterancestors()</tt>, <tt class="docutils literal">.iterdescendants()</tt>, <tt class="docutils literal">.iterchildren()</tt>
and <tt class="docutils literal">.itertext()</tt> methods;the <tt class="docutils literal">strip_attributes()</tt>,
<tt class="docutils literal">strip_elements()</tt> and <tt class="docutils literal">strip_tags()</tt> functions as well as the
<tt class="docutils literal">iterparse()</tt> class. Patch by Simon Sapin.</li>
<li>C14N allows specifying the inclusive prefixes to be promoted
to top-level during exclusive serialisation.</li>
</ul>
</div>
<div class="section" id="id153">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Passing long Unicode strings into the <tt class="docutils literal">feed()</tt> parser interface
failed to read the entire string.</li>
</ul>
</div>
<div class="section" id="id154">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="alpha1-2012-07-31">
<h1>3.0alpha1 (2012-07-31)</h1>
<div class="section" id="id155">
<h2>Features added</h2>
<ul class="simple">
<li>Initial support for building in PyPy (through cpyext).</li>
<li>DTD objects gained an API that allows read access to their
declarations.</li>
<li><tt class="docutils literal">xpathgrep.py</tt> gained support for parsing line-by-line (e.g.
from grep output) and for surrounding the output with a new root
tag.</li>
<li><tt class="docutils literal"><span class="pre">E-factory</span></tt> in <tt class="docutils literal">lxml.builder</tt> accepts subtypes of known data
types (such as string subtypes) when building elements around them.</li>
<li>Tree iteration and <tt class="docutils literal">iterparse()</tt> with a selective <tt class="docutils literal">tag</tt>
argument supports passing a set of tags. Tree nodes will be
returned by the iterators if they match any of the tags.</li>
</ul>
</div>
<div class="section" id="id156">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>The <tt class="docutils literal"><span class="pre">.find*()</span></tt> methods in <tt class="docutils literal">lxml.objectify</tt> no longer use XPath
internally, which makes them faster in many cases (especially when
short circuiting after a single or couple of elements) and fixes
some behavioural differences compared to <tt class="docutils literal">lxml.etree</tt>. Note that
this means that they no longer support arbitrary XPath expressions
but only the subset that the <tt class="docutils literal">ElementPath</tt> language supports.
The previous implementation was also redundant with the normal
XPath support, which can be used as a replacement.</li>
<li><tt class="docutils literal"><span class="pre">el.find('*')</span></tt> could accidentally return a comment or processing
instruction that happened to be in the wrong spot. (Same for the
other <tt class="docutils literal"><span class="pre">.find*()</span></tt> methods.)</li>
<li>The error logging is less intrusive and avoids a global setup where
possible.</li>
<li>Fixed undefined names in html5lib parser.</li>
<li><tt class="docutils literal">xpathgrep.py</tt> did not work in Python 3.</li>
<li><tt class="docutils literal">Element.attrib.update()</tt> did not accept an <tt class="docutils literal">attrib</tt> of
another Element as parameter.</li>
<li>For subtypes of <tt class="docutils literal">ElementBase</tt> that make the <tt class="docutils literal">.text</tt> or <tt class="docutils literal">.tail</tt>
properties immutable (as in objectify, for example), inserting text
when creating Elements through the E-Factory feature of the class
constructor would fail with an exception, stating that the text
cannot be modified.</li>
</ul>
</div>
<div class="section" id="id157">
<h2>Other changes</h2>
<ul class="simple">
<li>The code base was overhauled to properly use 'const' where the API
of libxml2 and libxslt requests it. This also has an impact on the
public C-API of lxml itself, as defined in <tt class="docutils literal">etreepublic.pxd</tt>, as
well as the provided declarations in the <tt class="docutils literal">lxml/includes/</tt> directory.
Code that uses these declarations may have to be adapted. On the
plus side, this fixes several C compiler warnings, also for user
code, thus making it easier to spot real problems again.</li>
<li>The functionality of "lxml.cssselect" was moved into a separate PyPI
package called "cssselect". To continue using it, you must install
that package separately. The "lxml.cssselect" module is still
available and provides the same interface, provided the "cssselect"
package can be imported at runtime.</li>
<li>Element attributes passed in as an <tt class="docutils literal">attrib</tt> dict or as keyword
arguments are now sorted by (namespaced) name before being created
to make their order predictable for serialisation and iteration.
Note that adding or deleting attributes afterwards does not take
that order into account, i.e. setting a new attribute appends it
after the existing ones.</li>
<li>Several classes that are for internal use only were removed
from the <tt class="docutils literal">lxml.etree</tt> module dict:
<tt class="docutils literal">_InputDocument, _ResolverRegistry, _ResolverContext, _BaseContext,
_ExsltRegExp, _IterparseContext, _TempStore, _ExceptionContext,
__ContentOnlyElement, _AttribIterator, _NamespaceRegistry,
_ClassNamespaceRegistry, _FunctionNamespaceRegistry,
_XPathFunctionNamespaceRegistry, _ParserDictionaryContext,
_FileReaderContext, _ParserContext, _PythonSaxParserTarget,
_TargetParserContext, _ReadOnlyProxy, _ReadOnlyPIProxy,
_ReadOnlyEntityProxy, _ReadOnlyElementProxy, _OpaqueNodeWrapper,
_OpaqueDocumentWrapper, _ModifyContentOnlyProxy,
_ModifyContentOnlyPIProxy, _ModifyContentOnlyEntityProxy,
_AppendOnlyElementProxy, _SaxParserContext, _FilelikeWriter,
_ParserSchemaValidationContext, _XPathContext,
_XSLTResolverContext, _XSLTContext, _XSLTQuotedStringParam</tt></li>
<li>Several internal classes can no longer be inherited from:
<tt class="docutils literal">_InputDocument, _ResolverRegistry, _ExsltRegExp, _ElementUnicodeResult,
_IterparseContext, _TempStore, _AttribIterator, _ClassNamespaceRegistry,
_XPathFunctionNamespaceRegistry, _ParserDictionaryContext,
_FileReaderContext, _PythonSaxParserTarget, _TargetParserContext,
_ReadOnlyPIProxy, _ReadOnlyEntityProxy, _OpaqueDocumentWrapper,
_ModifyContentOnlyPIProxy, _ModifyContentOnlyEntityProxy,
_AppendOnlyElementProxy, _FilelikeWriter, _ParserSchemaValidationContext,
_XPathContext, _XSLTResolverContext, _XSLTContext, _XSLTQuotedStringParam,
_XSLTResultTree, _XSLTProcessingInstruction</tt></li>
</ul>
</div>
</div>
<div class="section" id="id158">
<h1>2.3.6 (2012-09-28)</h1>
<div class="section" id="id159">
<h2>Features added</h2>
</div>
<div class="section" id="id160">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Passing long Unicode strings into the <tt class="docutils literal">feed()</tt> parser interface
failed to read the entire string.</li>
</ul>
</div>
<div class="section" id="id161">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id162">
<h1>2.3.5 (2012-07-31)</h1>
<div class="section" id="id163">
<h2>Features added</h2>
</div>
<div class="section" id="id164">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash when merging text nodes in <tt class="docutils literal">element.remove()</tt>.</li>
<li>Crash in sax/target parser when reporting empty doctype.</li>
</ul>
</div>
<div class="section" id="id165">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id166">
<h1>2.3.4 (2012-03-26)</h1>
<div class="section" id="id167">
<h2>Features added</h2>
</div>
<div class="section" id="id168">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash when building an nsmap (Element property) with empty
namespace URIs.</li>
<li>Crash due to race condition when errors (or user messages) occur
during threaded XSLT processing.</li>
<li>XSLT stylesheet compilation could ignore compilation errors.</li>
</ul>
</div>
<div class="section" id="id169">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id170">
<h1>2.3.3 (2012-01-04)</h1>
<div class="section" id="id171">
<h2>Features added</h2>
<ul class="simple">
<li><tt class="docutils literal">lxml.html.tostring()</tt> gained new serialisation options
<tt class="docutils literal">with_tail</tt> and <tt class="docutils literal">doctype</tt>.</li>
</ul>
</div>
<div class="section" id="id172">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Fixed a crash when using <tt class="docutils literal">iterparse()</tt> for HTML parsing and
requesting start events.</li>
<li>Fixed parsing of more selectors in cssselect. Whitespace before
pseudo-elements and pseudo-classes is significant as it is a
descendant combinator.
"E :pseudo" should parse the same as "E *:pseudo", not "E:pseudo".
Patch by Simon Sapin.</li>
<li>lxml.html.diff no longer raises an exception when hitting
'img' tags without 'src' attribute.</li>
</ul>
</div>
<div class="section" id="id173">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id174">
<h1>2.3.2 (2011-11-11)</h1>
<div class="section" id="id175">
<h2>Features added</h2>
<ul class="simple">
<li><tt class="docutils literal">lxml.objectify.deannotate()</tt> has a new boolean option
<tt class="docutils literal">cleanup_namespaces</tt> to remove the objectify namespace
declarations (and generally clean up the namespace declarations)
after removing the type annotations.</li>
<li><tt class="docutils literal">lxml.objectify</tt> gained its own <tt class="docutils literal">SubElement()</tt> function as a
copy of <tt class="docutils literal">etree.SubElement</tt> to avoid an otherwise redundant import
of <tt class="docutils literal">lxml.etree</tt> on the user side.</li>
</ul>
</div>
<div class="section" id="id176">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Fixed the "descendant" bug in cssselect a second time (after a first
fix in lxml 2.3.1). The previous change resulted in a serious
performance regression for the XPath based evaluation of the
translated expression. Note that this breaks the usage of some of
the generated XPath expressions as XSLT location paths that
previously worked in 2.3.1.</li>
<li>Fixed parsing of some selectors in cssselect. Whitespace after combinators
">", "+" and "~" is now correctly ignored. Previously it was parsed as
a descendant combinator. For example, "div> .foo" was parsed the same as
"div>* .foo" instead of "div>.foo". Patch by Simon Sapin.</li>
</ul>
</div>
<div class="section" id="id177">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id178">
<h1>2.3.1 (2011-09-25)</h1>
<div class="section" id="id179">
<h2>Features added</h2>
<ul class="simple">
<li>New option <tt class="docutils literal">kill_tags</tt> in <tt class="docutils literal">lxml.html.clean</tt> to remove specific
tags and their content (i.e. their whole subtree).</li>
<li><tt class="docutils literal">pi.get()</tt> and <tt class="docutils literal">pi.attrib</tt> on processing instructions to parse
pseudo-attributes from the text content of processing instructions.</li>
<li><tt class="docutils literal">lxml.get_include()</tt> returns a list of include paths that can be
used to compile external C code against lxml.etree. This is
specifically required for statically linked lxml builds when code
needs to compile against the exact same header file versions as lxml
itself.</li>
<li><tt class="docutils literal">Resolver.resolve_file()</tt> takes an additional option
<tt class="docutils literal">close_file</tt> that configures if the file(-like) object will be
closed after reading or not. By default, the file will be closed,
as the user is not expected to keep a reference to it.</li>
</ul>
</div>
<div class="section" id="id180">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>HTML cleaning didn't remove 'data:' links.</li>
<li>The html5lib parser integration now uses the 'official'
implementation in html5lib itself, which makes it work with newer
releases of the library.</li>
<li>In <tt class="docutils literal">lxml.sax</tt>, <tt class="docutils literal">endElementNS()</tt> could incorrectly reject a plain
tag name when the corresponding start event inferred the same plain
tag name to be in the default namespace.</li>
<li>When an open file-like object is passed into <tt class="docutils literal">parse()</tt> or
<tt class="docutils literal">iterparse()</tt>, the parser will no longer close it after use. This
reverts a change in lxml 2.3 where all files would be closed. It is
the users responsibility to properly close the file(-like) object,
also in error cases.</li>
<li>Assertion error in lxml.html.cleaner when discarding top-level elements.</li>
<li>In lxml.cssselect, use the xpath 'A//B' (short for
'A/descendant-or-self::node()/B') instead of 'A/descendant::B' for
the css descendant selector ('A B'). This makes a few edge cases
like <tt class="docutils literal">"div <span class="pre">*:last-child"</span></tt> consistent with the selector behavior in
WebKit and Firefox, and makes more css expressions valid location
paths (for use in xsl:template match).</li>
<li>In lxml.html, non-selected <tt class="docutils literal"><option></tt> tags no longer show up in the
collected form values.</li>
<li>Adding/removing <tt class="docutils literal"><option></tt> values to/from a multiple select form
field properly selects them and unselects them.</li>
</ul>
</div>
<div class="section" id="id181">
<h2>Other changes</h2>
<ul class="simple">
<li>Static builds can specify the download directory with the
<tt class="docutils literal"><span class="pre">--download-dir</span></tt> option.</li>
</ul>
</div>
</div>
<div class="section" id="id182">
<h1>2.3 (2011-02-06)</h1>
<div class="section" id="id183">
<h2>Features added</h2>
<ul class="simple">
<li>When looking for children, <tt class="docutils literal">lxml.objectify</tt> takes '{}tag' as
meaning an empty namespace, as opposed to the parent namespace.</li>
</ul>
</div>
<div class="section" id="id184">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>When finished reading from a file-like object, the parser
immediately calls its <tt class="docutils literal">.close()</tt> method.</li>
<li>When finished parsing, <tt class="docutils literal">iterparse()</tt> immediately closes the input
file.</li>
<li>Work-around for libxml2 bug that can leave the HTML parser in a
non-functional state after parsing a severely broken document (fixed
in libxml2 2.7.8).</li>
<li><tt class="docutils literal">marque</tt> tag in HTML cleanup code is correctly named <tt class="docutils literal">marquee</tt>.</li>
</ul>
</div>
<div class="section" id="id185">
<h2>Other changes</h2>
<ul class="simple">
<li>Some public functions in the Cython-level C-API have more explicit
return types.</li>
</ul>
</div>
</div>
<div class="section" id="beta1-2010-09-06">
<h1>2.3beta1 (2010-09-06)</h1>
<div class="section" id="id186">
<h2>Features added</h2>
</div>
<div class="section" id="id187">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash in newer libxml2 versions when moving elements between
documents that had attributes on replaced XInclude nodes.</li>
<li><tt class="docutils literal">XMLID()</tt> function was missing the optional <tt class="docutils literal">parser</tt> and
<tt class="docutils literal">base_url</tt> parameters.</li>
<li>Searching for wildcard tags in <tt class="docutils literal">iterparse()</tt> was broken in Py3.</li>
<li><tt class="docutils literal">lxml.html.open_in_browser()</tt> didn't work in Python 3 due to the
use of os.tempnam. It now takes an optional 'encoding' parameter.</li>
</ul>
</div>
<div class="section" id="id188">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="alpha2-2010-07-24">
<h1>2.3alpha2 (2010-07-24)</h1>
<div class="section" id="id189">
<h2>Features added</h2>
</div>
<div class="section" id="id190">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash in XSLT when generating text-only result documents with a
stylesheet created in a different thread.</li>
</ul>
</div>
<div class="section" id="id191">
<h2>Other changes</h2>
<ul class="simple">
<li><tt class="docutils literal">repr()</tt> of Element objects shows the hex ID with leading 0x
(following ElementTree 1.3).</li>
</ul>
</div>
</div>
<div class="section" id="alpha1-2010-06-19">
<h1>2.3alpha1 (2010-06-19)</h1>
<div class="section" id="id192">
<h2>Features added</h2>
<ul class="simple">
<li>Keyword argument <tt class="docutils literal">namespaces</tt> in <tt class="docutils literal">lxml.cssselect.CSSSelector()</tt>
to pass a prefix-to-namespace mapping for the selector.</li>
<li>New function <tt class="docutils literal">lxml.etree.register_namespace(prefix, uri)</tt> that
globally registers a namespace prefix for a namespace that newly
created Elements in that namespace will use automatically. Follows
ElementTree 1.3.</li>
<li>Support 'unicode' string name as encoding parameter in
<tt class="docutils literal">tostring()</tt>, following ElementTree 1.3.</li>
<li>Support 'c14n' serialisation method in <tt class="docutils literal">ElementTree.write()</tt> and
<tt class="docutils literal">tostring()</tt>, following ElementTree 1.3.</li>
<li>The ElementPath expression syntax (<tt class="docutils literal"><span class="pre">el.find*()</span></tt>) was extended to
match the upcoming ElementTree 1.3 that will ship in the standard
library of Python 3.2/2.7. This includes extended support for
predicates as well as namespace prefixes (as known from XPath).</li>
<li>During regular XPath evaluation, various ESXLT functions are
available within their namespace when using libxslt 1.1.26 or later.</li>
<li>Support passing a readily configured logger instance into
<tt class="docutils literal">PyErrorLog</tt>, instead of a logger name.</li>
<li>On serialisation, the new <tt class="docutils literal">doctype</tt> parameter can be used to
override the DOCTYPE (internal subset) of the document.</li>
<li>New parameter <tt class="docutils literal">output_parent</tt> to <tt class="docutils literal">XSLTExtension.apply_templates()</tt>
to append the resulting content directly to an output element.</li>
<li><tt class="docutils literal">XSLTExtension.process_children()</tt> to process the content of the
XSLT extension element itself.</li>
<li>ISO-Schematron support based on the de-facto Schematron reference
'skeleton implementation'.</li>
<li>XSLT objects now take XPath object as <tt class="docutils literal">__call__</tt> stylesheet
parameters.</li>
<li>Enable path caching in ElementPath (<tt class="docutils literal"><span class="pre">el.find*()</span></tt>) to avoid parsing
overhead.</li>
<li>Setting the value of a namespaced attribute always uses a prefixed
namespace instead of the default namespace even if both declare the
same namespace URI. This avoids serialisation problems when an
attribute from a default namespace is set on an element from a
different namespace.</li>
<li>XSLT extension elements: support for XSLT context nodes other than
elements: document root, comments, processing instructions.</li>
<li>Support for strings (in addition to Elements) in node-sets returned
by extension functions.</li>
<li>Forms that lack an <tt class="docutils literal">action</tt> attribute default to the base URL of
the document on submit.</li>
<li>XPath attribute result strings have an <tt class="docutils literal">attrname</tt> property.</li>
<li>Namespace URIs get validated against RFC 3986 at the API level
(required by the XML namespace specification).</li>
<li>Target parsers show their target object in the <tt class="docutils literal">.target</tt> property
(compatible with ElementTree).</li>
</ul>
</div>
<div class="section" id="id193">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>API is hardened against invalid proxy instances to prevent crashes
due to incorrectly instantiated Element instances.</li>
<li>Prevent crash when instantiating <tt class="docutils literal">CommentBase</tt> and friends.</li>
<li>Export ElementTree compatible XML parser class as
<tt class="docutils literal">XMLTreeBuilder</tt>, as it is called in ET 1.2.</li>
<li>ObjectifiedDataElements in lxml.objectify were not hashable. They
now use the hash value of the underlying Python value (string,
number, etc.) to which they compare equal.</li>
<li>Parsing broken fragments in lxml.html could fail if the fragment
contained an orphaned closing '</div>' tag.</li>
<li>Using XSLT extension elements around the root of the output document
crashed.</li>
<li><tt class="docutils literal">lxml.cssselect</tt> did not distinguish between <tt class="docutils literal"><span class="pre">x[attr="val"]</span></tt> and
<tt class="docutils literal">x <span class="pre">[attr="val"]</span></tt> (with a space). The latter now matches the
attribute independent of the element.</li>
<li>Rewriting multiple links inside of HTML text content could end up
replacing unrelated content as replacements could impact the
reported position of subsequent matches. Modifications are now
simplified by letting the <tt class="docutils literal">iterlinks()</tt> generator in <tt class="docutils literal">lxml.html</tt>
return links in reversed order if they appear inside the same text
node. Thus, replacements and link-internal modifications no longer
change the position of links reported afterwards.</li>
<li>The <tt class="docutils literal">.value</tt> attribute of <tt class="docutils literal">textarea</tt> elements in lxml.html did
not represent the complete raw value (including child tags etc.). It
now serialises the complete content on read and replaces the
complete content by a string on write.</li>
<li>Target parser didn't call <tt class="docutils literal">.close()</tt> on the target object if
parsing failed. Now it is guaranteed that <tt class="docutils literal">.close()</tt> will be
called after parsing, regardless of the outcome.</li>
</ul>
</div>
<div class="section" id="id194">
<h2>Other changes</h2>
<ul class="simple">
<li>Official support for Python 3.1.2 and later.</li>
<li>Static MS Windows builds can now download their dependencies
themselves.</li>
<li><tt class="docutils literal">Element.attrib</tt> no longer uses a cyclic reference back to its
Element object. It therefore no longer requires the garbage
collector to clean up.</li>
<li>Static builds include libiconv, in addition to libxml2 and libxslt.</li>
</ul>
</div>
</div>
<div class="section" id="id195">
<h1>2.2.8 (2010-09-02)</h1>
<div class="section" id="id196">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash in newer libxml2 versions when moving elements between
documents that had attributes on replaced XInclude nodes.</li>
<li>Import fix for urljoin in Python 3.1+.</li>
</ul>
</div>
</div>
<div class="section" id="id197">
<h1>2.2.7 (2010-07-24)</h1>
<div class="section" id="id198">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash in XSLT when generating text-only result documents with a
stylesheet created in a different thread.</li>
</ul>
</div>
</div>
<div class="section" id="id199">
<h1>2.2.6 (2010-03-02)</h1>
<div class="section" id="id200">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Fixed several Python 3 regressions by building with Cython 0.11.3.</li>
</ul>
</div>
</div>
<div class="section" id="id201">
<h1>2.2.5 (2010-02-28)</h1>
<div class="section" id="id202">
<h2>Features added</h2>
<ul class="simple">
<li>Support for running XSLT extension elements on the input root node
(e.g. in a template matching on "/").</li>
</ul>
</div>
<div class="section" id="id203">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash in XPath evaluation when reading smart strings from a document
other than the original context document.</li>
<li>Support recent versions of html5lib by not requiring its
<tt class="docutils literal">XHTMLParser</tt> in <tt class="docutils literal">htmlparser.py</tt> anymore.</li>
<li>Manually instantiating the custom element classes in
<tt class="docutils literal">lxml.objectify</tt> could crash.</li>
<li>Invalid XML text characters were not rejected by the API when they
appeared in unicode strings directly after non-ASCII characters.</li>
<li>lxml.html.open_http_urllib() did not work in Python 3.</li>
<li>The functions <tt class="docutils literal">strip_tags()</tt> and <tt class="docutils literal">strip_elements()</tt> in
<tt class="docutils literal">lxml.etree</tt> did not remove all occurrences of a tag in all cases.</li>
<li>Crash in XSLT extension elements when the XSLT context node is not
an element.</li>
</ul>
</div>
</div>
<div class="section" id="id204">
<h1>2.2.4 (2009-11-11)</h1>
<div class="section" id="id205">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Static build of libxml2/libxslt was broken.</li>
</ul>
</div>
</div>
<div class="section" id="id206">
<h1>2.2.3 (2009-10-30)</h1>
<div class="section" id="id207">
<h2>Features added</h2>
</div>
<div class="section" id="id208">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>The <tt class="docutils literal">resolve_entities</tt> option did not work in the incremental feed
parser.</li>
<li>Looking up and deleting attributes without a namespace could hit a
namespaced attribute of the same name instead.</li>
<li>Late errors during calls to <tt class="docutils literal">SubElement()</tt> (e.g. attribute related
ones) could leave a partially initialised element in the tree.</li>
<li>Modifying trees that contain parsed entity references could result
in an infinite loop.</li>
<li>ObjectifiedElement.__setattr__ created an empty-string child element when the
attribute value was rejected as a non-unicode/non-ascii string</li>
<li>Syntax errors in <tt class="docutils literal">lxml.cssselect</tt> could result in misleading error
messages.</li>
<li>Invalid syntax in CSS expressions could lead to an infinite loop in
the parser of <tt class="docutils literal">lxml.cssselect</tt>.</li>
<li>CSS special character escapes were not properly handled in
<tt class="docutils literal">lxml.cssselect</tt>.</li>
<li>CSS Unicode escapes were not properly decoded in <tt class="docutils literal">lxml.cssselect</tt>.</li>
<li>Select options in HTML forms that had no explicit <tt class="docutils literal">value</tt>
attribute were not handled correctly. The HTML standard dictates
that their value is defined by their text content. This is now
supported by lxml.html.</li>
<li>XPath raised a TypeError when finding CDATA sections. This is now
fully supported.</li>
<li>Calling <tt class="docutils literal">help(lxml.objectify)</tt> didn't work at the prompt.</li>
<li>The <tt class="docutils literal">ElementMaker</tt> in lxml.objectify no longer defines the default
namespaces when annotation is disabled.</li>
<li>Feed parser failed to honour the 'recover' option on parse errors.</li>
<li>Diverting the error logging to Python's logging system was broken.</li>
</ul>
</div>
<div class="section" id="id209">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id210">
<h1>2.2.2 (2009-06-21)</h1>
<div class="section" id="id211">
<h2>Features added</h2>
<ul class="simple">
<li>New helper functions <tt class="docutils literal">strip_attributes()</tt>, <tt class="docutils literal">strip_elements()</tt>,
<tt class="docutils literal">strip_tags()</tt> in lxml.etree to remove attributes/subtrees/tags
from a subtree.</li>
</ul>
</div>
<div class="section" id="id212">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Namespace cleanup on subtree insertions could result in missing
namespace declarations (and potentially crashes) if the element
defining a namespace was deleted and the namespace was not used by
the top element of the inserted subtree but only in deeper subtrees.</li>
<li>Raising an exception from a parser target callback didn't always
terminate the parser.</li>
<li>Only {true, false, 1, 0} are accepted as the lexical representation for
BoolElement ({True, False, T, F, t, f} not any more), restoring lxml <= 2.0
behaviour.</li>
</ul>
</div>
<div class="section" id="id213">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id214">
<h1>2.2.1 (2009-06-02)</h1>
<div class="section" id="id215">
<h2>Features added</h2>
<ul class="simple">
<li>Injecting default attributes into a document during XML Schema
validation (also at parse time).</li>
<li>Pass <tt class="docutils literal">huge_tree</tt> parser option to disable parser security
restrictions imposed by libxml2 2.7.</li>
</ul>
</div>
<div class="section" id="id216">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>The script for statically building libxml2 and libxslt didn't work
in Py3.</li>
<li><tt class="docutils literal">XMLSchema()</tt> also passes invalid schema documents on to libxml2
for parsing (which could lead to a crash before release 2.6.24).</li>
</ul>
</div>
<div class="section" id="id217">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id218">
<h1>2.2 (2009-03-21)</h1>
<div class="section" id="id219">
<h2>Features added</h2>
<ul class="simple">
<li>Support for <tt class="docutils literal">standalone</tt> flag in XML declaration through
<tt class="docutils literal">tree.docinfo.standalone</tt> and by passing <tt class="docutils literal">standalone=True/False</tt>
on serialisation.</li>
</ul>
</div>
<div class="section" id="id220">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash when parsing an XML Schema with external imports from a
filename.</li>
</ul>
</div>
</div>
<div class="section" id="beta4-2009-02-27">
<h1>2.2beta4 (2009-02-27)</h1>
<div class="section" id="id221">
<h2>Features added</h2>
<ul class="simple">
<li>Support strings and instantiable Element classes as child arguments
to the constructor of custom Element classes.</li>
<li>GZip compression support for serialisation to files and file-like
objects.</li>
</ul>
</div>
<div class="section" id="id222">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Deep-copying an ElementTree copied neither its sibling PIs and
comments nor its internal/external DTD subsets.</li>
<li>Soupparser failed on broken attributes without values.</li>
<li>Crash in XSLT when overwriting an already defined attribute using
<tt class="docutils literal">xsl:attribute</tt>.</li>
<li>Crash bug in exception handling code under Python 3. This was due
to a problem in Cython, not lxml itself.</li>
<li><tt class="docutils literal">lxml.html.FormElement._name()</tt> failed for non top-level forms.</li>
<li><tt class="docutils literal">TAG</tt> special attribute in constructor of custom Element classes
was evaluated incorrectly.</li>
</ul>
</div>
<div class="section" id="id223">
<h2>Other changes</h2>
<ul class="simple">
<li>Official support for Python 3.0.1.</li>
<li><tt class="docutils literal">Element.findtext()</tt> now returns an empty string instead of None
for Elements without text content.</li>
</ul>
</div>
</div>
<div class="section" id="beta3-2009-02-17">
<h1>2.2beta3 (2009-02-17)</h1>
<div class="section" id="id224">
<h2>Features added</h2>
<ul class="simple">
<li><tt class="docutils literal">XSLT.strparam()</tt> class method to wrap quoted string parameters
that require escaping.</li>
</ul>
</div>
<div class="section" id="id225">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Memory leak in XPath evaluators.</li>
<li>Crash when parsing indented XML in one thread and merging it with
other documents parsed in another thread.</li>
<li>Setting the <tt class="docutils literal">base</tt> attribute in <tt class="docutils literal">lxml.objectify</tt> from a unicode
string failed.</li>
<li>Fixes following changes in Python 3.0.1.</li>
<li>Minor fixes for Python 3.</li>
</ul>
</div>
<div class="section" id="id226">
<h2>Other changes</h2>
<ul class="simple">
<li>The global error log (which is copied into the exception log) is now
local to a thread, which fixes some race conditions.</li>
<li>More robust error handling on serialisation.</li>
</ul>
</div>
</div>
<div class="section" id="beta2-2009-01-25">
<h1>2.2beta2 (2009-01-25)</h1>
<div class="section" id="id227">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Potential memory leak on exception handling. This was due to a
problem in Cython, not lxml itself.</li>
<li><tt class="docutils literal">iter_links</tt> (and related link-rewriting functions) in
<tt class="docutils literal">lxml.html</tt> would interpret CSS like <tt class="docutils literal"><span class="pre">url("link")</span></tt> incorrectly
(treating the quotation marks as part of the link).</li>
<li>Failing import on systems that have an <tt class="docutils literal">io</tt> module.</li>
</ul>
</div>
</div>
<div class="section" id="id228">
<h1>2.1.5 (2009-01-06)</h1>
<div class="section" id="id229">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Potential memory leak on exception handling. This was due to a
problem in Cython, not lxml itself.</li>
<li>Failing import on systems that have an <tt class="docutils literal">io</tt> module.</li>
</ul>
</div>
</div>
<div class="section" id="beta1-2008-12-12">
<h1>2.2beta1 (2008-12-12)</h1>
<div class="section" id="id230">
<h2>Features added</h2>
<ul class="simple">
<li>Allow <tt class="docutils literal">lxml.html.diff.htmldiff</tt> to accept Element objects, not
just HTML strings.</li>
</ul>
</div>
<div class="section" id="id231">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash when using an XPath evaluator in multiple threads.</li>
<li>Fixed missing whitespace before <tt class="docutils literal"><span class="pre">Link:...</span></tt> in <tt class="docutils literal">lxml.html.diff</tt>.</li>
</ul>
</div>
<div class="section" id="id232">
<h2>Other changes</h2>
<ul class="simple">
<li>Export <tt class="docutils literal">lxml.html.parse</tt>.</li>
</ul>
</div>
</div>
<div class="section" id="id233">
<h1>2.1.4 (2008-12-12)</h1>
<div class="section" id="id234">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash when using an XPath evaluator in multiple threads.</li>
</ul>
</div>
</div>
<div class="section" id="id235">
<h1>2.0.11 (2008-12-12)</h1>
<div class="section" id="id236">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash when using an XPath evaluator in multiple threads.</li>
</ul>
</div>
</div>
<div class="section" id="alpha1-2008-11-23">
<h1>2.2alpha1 (2008-11-23)</h1>
<div class="section" id="id237">
<h2>Features added</h2>
<ul class="simple">
<li>Support for XSLT result tree fragments in XPath/XSLT extension
functions.</li>
<li>QName objects have new properties <tt class="docutils literal">namespace</tt> and <tt class="docutils literal">localname</tt>.</li>
<li>New options for exclusive C14N and C14N without comments.</li>
<li>Instantiating a custom Element classes creates a new Element.</li>
</ul>
</div>
<div class="section" id="id238">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>XSLT didn't inherit the parse options of the input document.</li>
<li>0-bytes could slip through the API when used inside of Unicode
strings.</li>
<li>With <tt class="docutils literal">lxml.html.clean.autolink</tt>, links with balanced parenthesis,
that end in a parenthesis, will be linked in their entirety (typical
with Wikipedia links).</li>
</ul>
</div>
<div class="section" id="id239">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id240">
<h1>2.1.3 (2008-11-17)</h1>
<div class="section" id="id241">
<h2>Features added</h2>
</div>
<div class="section" id="id242">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Ref-count leaks when lxml enters a try-except statement while an
outside exception lives in sys.exc_*(). This was due to a problem in
Cython, not lxml itself.</li>
<li>Parser Unicode decoding errors could get swallowed by other
exceptions.</li>
<li>Name/import errors in some Python modules.</li>
<li>Internal DTD subsets that did not specify a system or public ID were
not serialised and did not appear in the docinfo property of
ElementTrees.</li>
<li>Fix a pre-Py3k warning when parsing from a gzip file in Py2.6.</li>
<li>Test suite fixes for libxml2 2.7.</li>
<li>Resolver.resolve_string() did not work for non-ASCII byte strings.</li>
<li>Resolver.resolve_file() was broken.</li>
<li>Overriding the parser encoding didn't work for many encodings.</li>
</ul>
</div>
<div class="section" id="id243">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id244">
<h1>2.0.10 (2008-11-17)</h1>
<div class="section" id="id245">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Ref-count leaks when lxml enters a try-except statement while an
outside exception lives in sys.exc_*(). This was due to a problem in
Cython, not lxml itself.</li>
</ul>
</div>
</div>
<div class="section" id="id246">
<h1>2.1.2 (2008-09-05)</h1>
<div class="section" id="id247">
<h2>Features added</h2>
<ul class="simple">
<li>lxml.etree now tries to find the absolute path name of files when
parsing from a file-like object. This helps custom resolvers when
resolving relative URLs, as lixbml2 can prepend them with the path
of the source document.</li>
</ul>
</div>
<div class="section" id="id248">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Memory problem when passing documents between threads.</li>
<li>Target parser did not honour the <tt class="docutils literal">recover</tt> option and raised an
exception instead of calling <tt class="docutils literal">.close()</tt> on the target.</li>
</ul>
</div>
<div class="section" id="id249">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id250">
<h1>2.0.9 (2008-09-05)</h1>
<div class="section" id="id251">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Memory problem when passing documents between threads.</li>
<li>Target parser did not honour the <tt class="docutils literal">recover</tt> option and raised an
exception instead of calling <tt class="docutils literal">.close()</tt> on the target.</li>
</ul>
</div>
</div>
<div class="section" id="id252">
<h1>2.1.1 (2008-07-24)</h1>
<div class="section" id="id253">
<h2>Features added</h2>
</div>
<div class="section" id="id254">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash when parsing XSLT stylesheets in a thread and using them in
another.</li>
<li>Encoding problem when including text with ElementInclude under
Python 3.</li>
</ul>
</div>
<div class="section" id="id255">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id256">
<h1>2.0.8 (2008-07-24)</h1>
<div class="section" id="id257">
<h2>Features added</h2>
<ul class="simple">
<li><tt class="docutils literal">lxml.html.rewrite_links()</tt> strips links to work around documents
with whitespace in URL attributes.</li>
</ul>
</div>
<div class="section" id="id258">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash when parsing XSLT stylesheets in a thread and using them in
another.</li>
<li>CSS selector parser dropped remaining expression after a function
with parameters.</li>
</ul>
</div>
<div class="section" id="id259">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="id260">
<h1>2.1 (2008-07-09)</h1>
<div class="section" id="id261">
<h2>Features added</h2>
<ul class="simple">
<li>Smart strings can be switched off in XPath (<tt class="docutils literal">smart_strings</tt>
keyword option).</li>
<li><tt class="docutils literal">lxml.html.rewrite_links()</tt> strips links to work around documents
with whitespace in URL attributes.</li>
</ul>
</div>
<div class="section" id="id262">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Custom resolvers were not used for XMLSchema includes/imports and
XInclude processing.</li>
<li>CSS selector parser dropped remaining expression after a function
with parameters.</li>
</ul>
</div>
<div class="section" id="id263">
<h2>Other changes</h2>
<ul class="simple">
<li><tt class="docutils literal">objectify.enableRecursiveStr()</tt> was removed, use
<tt class="docutils literal">objectify.enable_recursive_str()</tt> instead</li>
<li>Speed-up when running XSLTs on documents from other threads</li>
</ul>
</div>
</div>
<div class="section" id="id264">
<h1>2.0.7 (2008-06-20)</h1>
<div class="section" id="id265">
<h2>Features added</h2>
<ul class="simple">
<li>Pickling <tt class="docutils literal">ElementTree</tt> objects in lxml.objectify.</li>
</ul>
</div>
<div class="section" id="id266">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Descending dot-separated classes in CSS selectors were not resolved
correctly.</li>
<li><tt class="docutils literal">ElementTree.parse()</tt> didn't handle target parser result.</li>
<li>Potential threading problem in XInclude.</li>
<li>Crash in Element class lookup classes when the __init__() method of
the super class is not called from Python subclasses.</li>
</ul>
</div>
<div class="section" id="id267">
<h2>Other changes</h2>
<ul class="simple">
<li>Non-ASCII characters in attribute values are no longer escaped on
serialisation.</li>
</ul>
</div>
</div>
<div class="section" id="beta3-2008-06-19">
<h1>2.1beta3 (2008-06-19)</h1>
<div class="section" id="id268">
<h2>Features added</h2>
<ul class="simple">
<li>Major overhaul of <tt class="docutils literal">tools/xpathgrep.py</tt> script.</li>
<li>Pickling <tt class="docutils literal">ElementTree</tt> objects in lxml.objectify.</li>
<li>Support for parsing from file-like objects that return unicode
strings.</li>
<li>New function <tt class="docutils literal">etree.cleanup_namespaces(el)</tt> that removes unused
namespace declarations from a (sub)tree (experimental).</li>
<li>XSLT results support the buffer protocol in Python 3.</li>
<li>Polymorphic functions in <tt class="docutils literal">lxml.html</tt> that accept either a tree or
a parsable string will return either a UTF-8 encoded byte string, a
unicode string or a tree, based on the type of the input.
Previously, the result was always a byte string or a tree.</li>
<li>Support for Python 2.6 and 3.0 beta.</li>
<li>File name handling now uses a heuristic to convert between byte
strings (usually filenames) and unicode strings (usually URLs).</li>
<li>Parsing from a plain file object frees the GIL under Python 2.x.</li>
<li>Running <tt class="docutils literal">iterparse()</tt> on a plain file (or filename) frees the GIL
on reading under Python 2.x.</li>
<li>Conversion functions <tt class="docutils literal">html_to_xhtml()</tt> and <tt class="docutils literal">xhtml_to_html()</tt> in
lxml.html (experimental).</li>
<li>Most features in lxml.html work for XHTML namespaced tag names
(experimental).</li>
</ul>
</div>
<div class="section" id="id269">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><tt class="docutils literal">ElementTree.parse()</tt> didn't handle target parser result.</li>
<li>Crash in Element class lookup classes when the __init__() method of
the super class is not called from Python subclasses.</li>
<li>A number of problems related to unicode/byte string conversion of
filenames and error messages were fixed.</li>
<li>Building on MacOS-X now passes the "flat_namespace" option to the C
compiler, which reportedly prevents build quirks and crashes on this
platform.</li>
<li>Windows build was broken.</li>
<li>Rare crash when serialising to a file object with certain encodings.</li>
</ul>
</div>
<div class="section" id="id270">
<h2>Other changes</h2>
<ul class="simple">
<li>Non-ASCII characters in attribute values are no longer escaped on
serialisation.</li>
<li>Passing non-ASCII byte strings or invalid unicode strings as .tag,
namespaces, etc. will result in a ValueError instead of an
AssertionError (just like the tag well-formedness check).</li>
<li>Up to several times faster attribute access (i.e. tree traversal) in
lxml.objectify.</li>
</ul>
</div>
</div>
<div class="section" id="id271">
<h1>2.0.6 (2008-05-31)</h1>
<div class="section" id="id272">
<h2>Features added</h2>
</div>
<div class="section" id="id273">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Incorrect evaluation of <tt class="docutils literal"><span class="pre">el.find("tag[child]")</span></tt>.</li>
<li>Windows build was broken.</li>
<li>Moving a subtree from a document created in one thread into a
document of another thread could crash when the rest of the source
document is deleted while the subtree is still in use.</li>
<li>Rare crash when serialising to a file object with certain encodings.</li>
</ul>
</div>
<div class="section" id="id274">
<h2>Other changes</h2>
<ul class="simple">
<li>lxml should now build without problems on MacOS-X.</li>
</ul>
</div>
</div>
<div class="section" id="beta2-2008-05-02">
<h1>2.1beta2 (2008-05-02)</h1>
<div class="section" id="id275">
<h2>Features added</h2>
<ul class="simple">
<li>All parse functions in lxml.html take a <tt class="docutils literal">parser</tt> keyword argument.</li>
<li>lxml.html has a new parser class <tt class="docutils literal">XHTMLParser</tt> and a module
attribute <tt class="docutils literal">xhtml_parser</tt> that provide XML parsers that are
pre-configured for the lxml.html package.</li>
</ul>
</div>
<div class="section" id="id276">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Moving a subtree from a document created in one thread into a
document of another thread could crash when the rest of the source
document is deleted while the subtree is still in use.</li>
<li>Passing an nsmap when creating an Element will no longer strip
redundantly defined namespace URIs. This prevented the definition
of more than one prefix for a namespace on the same Element.</li>
</ul>
</div>
<div class="section" id="id277">
<h2>Other changes</h2>
<ul class="simple">
<li>If the default namespace is redundantly defined with a prefix on the
same Element, the prefix will now be preferred for subelements and
attributes. This allows users to work around a problem in libxml2
where attributes from the default namespace could serialise without
a prefix even when they appear on an Element with a different
namespace (i.e. they would end up in the wrong namespace).</li>
</ul>
</div>
</div>
<div class="section" id="id278">
<h1>2.0.5 (2008-05-01)</h1>
<div class="section" id="id279">
<h2>Features added</h2>
</div>
<div class="section" id="id280">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Resolving to a filename in custom resolvers didn't work.</li>
<li>lxml did not honour libxslt's second error state "STOPPED", which
let some XSLT errors pass silently.</li>
<li>Memory leak in Schematron with libxml2 >= 2.6.31.</li>
</ul>
</div>
<div class="section" id="id281">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="beta1-2008-04-15">
<h1>2.1beta1 (2008-04-15)</h1>
<div class="section" id="id282">
<h2>Features added</h2>
<ul class="simple">
<li>Error logging in Schematron (requires libxml2 2.6.32 or later).</li>
<li>Parser option <tt class="docutils literal">strip_cdata</tt> for normalising or keeping CDATA
sections. Defaults to <tt class="docutils literal">True</tt> as before, thus replacing CDATA
sections by their text content.</li>
<li><tt class="docutils literal">CDATA()</tt> factory to wrap string content as CDATA section.</li>
</ul>
</div>
<div class="section" id="id283">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Resolving to a filename in custom resolvers didn't work.</li>
<li>lxml did not honour libxslt's second error state "STOPPED", which
let some XSLT errors pass silently.</li>
<li>Memory leak in Schematron with libxml2 >= 2.6.31.</li>
<li>lxml.etree accepted non well-formed namespace prefix names.</li>
</ul>
</div>
<div class="section" id="id284">
<h2>Other changes</h2>
<ul class="simple">
<li>Major cleanup in internal <tt class="docutils literal">moveNodeToDocument()</tt> function, which
takes care of namespace cleanup when moving elements between
different namespace contexts.</li>
<li>New Elements created through the <tt class="docutils literal">makeelement()</tt> method of an HTML
parser or through lxml.html now end up in a new HTML document
(doctype HTML 4.01 Transitional) instead of a generic XML document.
This mostly impacts the serialisation and the availability of a DTD
context.</li>
</ul>
</div>
</div>
<div class="section" id="id285">
<h1>2.0.4 (2008-04-13)</h1>
<div class="section" id="id286">
<h2>Features added</h2>
</div>
<div class="section" id="id287">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Hanging thread in conjunction with GTK threading.</li>
<li>Crash bug in iterparse when moving elements into other documents.</li>
<li>HTML elements' <tt class="docutils literal">.cssselect()</tt> method was broken.</li>
<li><tt class="docutils literal"><span class="pre">ElementTree.find*()</span></tt> didn't accept QName objects.</li>
</ul>
</div>
<div class="section" id="id288">
<h2>Other changes</h2>
</div>
</div>
<div class="section" id="alpha1-2008-03-27">
<h1>2.1alpha1 (2008-03-27)</h1>
<div class="section" id="id289">
<h2>Features added</h2>
<ul class="simple">
<li>New event types 'comment' and 'pi' in <tt class="docutils literal">iterparse()</tt>.</li>
<li><tt class="docutils literal">XSLTAccessControl</tt> instances have a property <tt class="docutils literal">options</tt> that
returns a dict of access configuration options.</li>
<li>Constant instances <tt class="docutils literal">DENY_ALL</tt> and <tt class="docutils literal">DENY_WRITE</tt> on
<tt class="docutils literal">XSLTAccessControl</tt> class.</li>
<li>Extension elements for XSLT (experimental!)</li>
<li><tt class="docutils literal">Element.base</tt> property returns the xml:base or HTML base URL of
an Element.</li>
<li><tt class="docutils literal">docinfo.URL</tt> property is writable.</li>
</ul>
</div>
<div class="section" id="id290">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Default encoding for plain text serialisation was different from
that of XML serialisation (UTF-8 instead of ASCII).</li>
</ul>
</div>
<div class="section" id="id291">
<h2>Other changes</h2>
<ul class="simple">
<li>Minor API speed-ups.</li>
<li>The benchmark suite now uses tail text in the trees, which makes the
absolute numbers incomparable to previous results.</li>
<li>Generating the HTML documentation now requires <a class="reference external" href="http://pygments.org/">Pygments</a>, which is
used to enable syntax highlighting for the doctest examples.</li>
</ul>
<p>Most long-time deprecated functions and methods were removed:</p>
<ul>
<li><p class="first"><tt class="docutils literal">etree.clearErrorLog()</tt>, use <tt class="docutils literal">etree.clear_error_log()</tt></p>
</li>
<li><p class="first"><tt class="docutils literal">etree.useGlobalPythonLog()</tt>, use
<tt class="docutils literal">etree.use_global_python_log()</tt></p>
</li>
<li><p class="first"><tt class="docutils literal">etree.ElementClassLookup.setFallback()</tt>, use
<tt class="docutils literal">etree.ElementClassLookup.set_fallback()</tt></p>
</li>
<li><p class="first"><tt class="docutils literal">etree.getDefaultParser()</tt>, use <tt class="docutils literal">etree.get_default_parser()</tt></p>
</li>
<li><p class="first"><tt class="docutils literal">etree.setDefaultParser()</tt>, use <tt class="docutils literal">etree.set_default_parser()</tt></p>
</li>
<li><p class="first"><tt class="docutils literal">etree.setElementClassLookup()</tt>, use
<tt class="docutils literal">etree.set_element_class_lookup()</tt></p>
<p>Note that <tt class="docutils literal">parser.setElementClassLookup()</tt> has not been removed
yet, although <tt class="docutils literal">parser.set_element_class_lookup()</tt> should be used
instead.</p>
</li>
<li><p class="first"><tt class="docutils literal">xpath_evaluator.registerNamespace()</tt>, use
<tt class="docutils literal">xpath_evaluator.register_namespace()</tt></p>
</li>
<li><p class="first"><tt class="docutils literal">xpath_evaluator.registerNamespaces()</tt>, use
<tt class="docutils literal">xpath_evaluator.register_namespaces()</tt></p>
</li>
<li><p class="first"><tt class="docutils literal">objectify.setPytypeAttributeTag</tt>, use
<tt class="docutils literal">objectify.set_pytype_attribute_tag</tt></p>
</li>
<li><p class="first"><tt class="docutils literal">objectify.setDefaultParser()</tt>, use
<tt class="docutils literal">objectify.set_default_parser()</tt></p>
</li>
</ul>
</div>
</div>
<div class="section" id="id292">
<h1>2.0.3 (2008-03-26)</h1>
<div class="section" id="id293">
<h2>Features added</h2>
<ul class="simple">
<li>soupparser.parse() allows passing keyword arguments on to
BeautifulSoup.</li>
<li><tt class="docutils literal">fromstring()</tt> method in <tt class="docutils literal">lxml.html.soupparser</tt>.</li>
</ul>
</div>
<div class="section" id="id294">
<h2>Bugs fixed</h2>
<ul class="simple">
<li><tt class="docutils literal">lxml.html.diff</tt> didn't treat empty tags properly (e.g.,
<tt class="docutils literal"><br></tt>).</li>
<li>Handle entity replacements correctly in target parser.</li>
<li>Crash when using <tt class="docutils literal">iterparse()</tt> with XML Schema validation.</li>
<li>The BeautifulSoup parser (soupparser.py) did not replace entities,
which made them turn up in text content.</li>
<li>Attribute assignment of custom PyTypes in objectify could fail to
correctly serialise the value to a string.</li>
</ul>
</div>
<div class="section" id="id295">
<h2>Other changes</h2>
<ul class="simple">
<li><tt class="docutils literal">lxml.html.ElementSoup</tt> was replaced by a new module
<tt class="docutils literal">lxml.html.soupparser</tt> with a more consistent API. The old module
remains for compatibility with ElementTree's own ElementSoup module.</li>
<li>Setting the XSLT_CONFIG and XML2_CONFIG environment variables at
build time will let setup.py pick up the <tt class="docutils literal"><span class="pre">xml2-config</span></tt> and
<tt class="docutils literal"><span class="pre">xslt-config</span></tt> scripts from the supplied path name.</li>
<li>Passing <tt class="docutils literal"><span class="pre">--with-xml2-config=/path/to/xml2-config</span></tt> to setup.py will
override the <tt class="docutils literal"><span class="pre">xml2-config</span></tt> script that is used to determine the C
compiler options. The same applies for the <tt class="docutils literal"><span class="pre">--with-xslt-config</span></tt>
option.</li>
</ul>
</div>
</div>
<div class="section" id="id296">
<h1>2.0.2 (2008-02-22)</h1>
<div class="section" id="id297">
<h2>Features added</h2>
<ul class="simple">
<li>Support passing <tt class="docutils literal">base_url</tt> to file parser functions to override
the filename of the file(-like) object.</li>
</ul>
</div>
<div class="section" id="id298">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>The prefix for objectify's pytype namespace was missing from the set
of default prefixes.</li>
<li>Memory leak in Schematron (fixed only for libxml2 2.6.31+).</li>
<li>Error type names in RelaxNG were reported incorrectly.</li>
<li>Slice deletion bug fixed in objectify.</li>
</ul>
</div>
<div class="section" id="id299">
<h2>Other changes</h2>
<ul class="simple">
<li>Enabled doctests for some Python modules (especially <tt class="docutils literal">lxml.html</tt>).</li>
<li>Add a <tt class="docutils literal">method</tt> argument to <tt class="docutils literal">lxml.html.tostring()</tt>
(<tt class="docutils literal"><span class="pre">method="xml"</span></tt> for XHTML output).</li>
<li>Make it clearer that methods like <tt class="docutils literal">lxml.html.fromstring()</tt> take a
<tt class="docutils literal">base_url</tt> argument.</li>
</ul>
</div>
</div>
<div class="section" id="id300">
<h1>2.0.1 (2008-02-13)</h1>
<div class="section" id="id301">
<h2>Features added</h2>
<ul class="simple">
<li>Child iteration in <tt class="docutils literal">lxml.pyclasslookup</tt>.</li>
<li>Loads of new docstrings reflect the signature of functions and
methods to make them visible in API docs and <tt class="docutils literal">help()</tt></li>
</ul>
</div>
<div class="section" id="id302">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>The module <tt class="docutils literal">lxml.html.builder</tt> was duplicated as
<tt class="docutils literal">lxml.htmlbuilder</tt></li>
<li>Form elements would return None for <tt class="docutils literal">form.fields.keys()</tt> if there
was an unnamed input field. Now unnamed input fields are completely
ignored.</li>
<li>Setting an element slice in objectify could insert slice-overlapping
elements at the wrong position.</li>
</ul>
</div>
<div class="section" id="id303">
<h2>Other changes</h2>
<ul class="simple">
<li>The generated API documentation was cleaned up and disburdened from
non-public classes etc.</li>
<li>The previously public module <tt class="docutils literal">lxml.html.setmixin</tt> was renamed to
<tt class="docutils literal">lxml.html._setmixin</tt> as it is not an official part of lxml. If
you want to use it, feel free to copy it over to your own source
base.</li>
<li>Passing <tt class="docutils literal"><span class="pre">--with-xslt-config=/path/to/xslt-config</span></tt> to setup.py will
override the <tt class="docutils literal"><span class="pre">xslt-config</span></tt> script that is used to determine the C
compiler options.</li>
</ul>
</div>
</div>
<div class="section" id="id304">
<h1>2.0 (2008-02-01)</h1>
<div class="section" id="id305">
<h2>Features added</h2>
<ul class="simple">
<li>Passing the <tt class="docutils literal">unicode</tt> type as <tt class="docutils literal">encoding</tt> to <tt class="docutils literal">tostring()</tt> will
serialise to unicode. The <tt class="docutils literal">tounicode()</tt> function is now
deprecated.</li>
<li><tt class="docutils literal">XMLSchema()</tt> and <tt class="docutils literal">RelaxNG()</tt> can parse from StringIO.</li>
<li><tt class="docutils literal">makeparser()</tt> function in <tt class="docutils literal">lxml.objectify</tt> to create a new
parser with the usual objectify setup.</li>
<li>Plain ASCII XPath string results are no longer forced into unicode
objects as in 2.0beta1, but are returned as plain strings as before.</li>
<li>All XPath string results are 'smart' objects that have a
<tt class="docutils literal">getparent()</tt> method to retrieve their parent Element.</li>
<li><tt class="docutils literal">with_tail</tt> option in serialiser functions.</li>
<li>More accurate exception messages in validator creation.</li>
<li>Parse-time XML schema validation (<tt class="docutils literal">schema</tt> parser keyword).</li>
<li>XPath string results of the <tt class="docutils literal">text()</tt> function and attribute
selection make their Element container accessible through a
<tt class="docutils literal">getparent()</tt> method. As a side-effect, they are now always
unicode objects (even ASCII strings).</li>
<li><tt class="docutils literal">XSLT</tt> objects are usable in any thread - at the cost of a deep
copy if they were not created in that thread.</li>
<li>Invalid entity names and character references will be rejected by
the <tt class="docutils literal">Entity()</tt> factory.</li>
<li><tt class="docutils literal">entity.text</tt> returns the textual representation of the entity,
e.g. <tt class="docutils literal">&amp;</tt>.</li>
<li>New properties <tt class="docutils literal">position</tt> and <tt class="docutils literal">code</tt> on ParseError exception (as
in ET 1.3)</li>
<li>Rich comparison of <tt class="docutils literal">element.attrib</tt> proxies.</li>
<li>ElementTree compatible TreeBuilder class.</li>
<li>Use default prefixes for some common XML namespaces.</li>
<li><tt class="docutils literal">lxml.html.clean.Cleaner</tt> now allows for a <tt class="docutils literal">host_whitelist</tt>, and
two overridable methods: <tt class="docutils literal">allow_embedded_url(el, url)</tt> and the
more general <tt class="docutils literal">allow_element(el)</tt>.</li>
<li>Extended slicing of Elements as in <tt class="docutils literal"><span class="pre">element[1:-1:2]</span></tt>, both in
etree and in objectify</li>
<li>Resolvers can now provide a <tt class="docutils literal">base_url</tt> keyword argument when
resolving a document as string data.</li>
<li>When using <tt class="docutils literal">lxml.doctestcompare</tt> you can give the doctest option
<tt class="docutils literal">NOPARSE_MARKUP</tt> (like <tt class="docutils literal"># doctest: +NOPARSE_MARKUP</tt>) to suppress
the special checking for one test.</li>
<li>Separate <tt class="docutils literal">feed_error_log</tt> property for the feed parser interface.
The normal parser interface and <tt class="docutils literal">iterparse</tt> continue to use
<tt class="docutils literal">error_log</tt>.</li>
<li>The normal parsers and the feed parser interface are now separated
and can be used concurrently on the same parser instance.</li>
<li><tt class="docutils literal">fromstringlist()</tt> and <tt class="docutils literal">tostringlist()</tt> functions as in
ElementTree 1.3</li>
<li><tt class="docutils literal">iterparse()</tt> accepts an <tt class="docutils literal">html</tt> boolean keyword argument for
parsing with the HTML parser (note that this interface may be
subject to change)</li>
<li>Parsers accept an <tt class="docutils literal">encoding</tt> keyword argument that overrides the encoding
of the parsed documents.</li>
<li>New C-API function <tt class="docutils literal">hasChild()</tt> to test for children</li>
<li><tt class="docutils literal">annotate()</tt> function in objectify can annotate with Python types and XSI
types in one step. Accompanied by <tt class="docutils literal">xsiannotate()</tt> and <tt class="docutils literal">pyannotate()</tt>.</li>
<li><tt class="docutils literal">ET.write()</tt>, <tt class="docutils literal">tostring()</tt> and <tt class="docutils literal">tounicode()</tt> now accept a keyword
argument <tt class="docutils literal">method</tt> that can be one of 'xml' (or None), 'html' or 'text' to
serialise as XML, HTML or plain text content.</li>
<li><tt class="docutils literal">iterfind()</tt> method on Elements returns an iterator equivalent to
<tt class="docutils literal">findall()</tt></li>
<li><tt class="docutils literal">itertext()</tt> method on Elements</li>
<li>Setting a QName object as value of the .text property or as an attribute
will resolve its prefix in the respective context</li>
<li>ElementTree-like parser target interface as described in
<a class="reference external" href="http://effbot.org/elementtree/elementtree-xmlparser.htm">http://effbot.org/elementtree/elementtree-xmlparser.htm</a></li>
<li>ElementTree-like feed parser interface on XMLParser and HTMLParser
(<tt class="docutils literal">feed()</tt> and <tt class="docutils literal">close()</tt> methods)</li>
<li>Reimplemented <tt class="docutils literal">objectify.E</tt> for better performance and improved
integration with objectify. Provides extended type support based on
registered PyTypes.</li>
<li>XSLT objects now support deep copying</li>
<li>New <tt class="docutils literal">makeSubElement()</tt> C-API function that allows creating a new
subelement straight with text, tail and attributes.</li>
<li>XPath extension functions can now access the current context node
(<tt class="docutils literal">context.context_node</tt>) and use a context dictionary
(<tt class="docutils literal">context.eval_context</tt>) from the context provided in their first
parameter</li>
<li>HTML tag soup parser based on BeautifulSoup in <tt class="docutils literal">lxml.html.ElementSoup</tt></li>
<li>New module <tt class="docutils literal">lxml.doctestcompare</tt> by Ian Bicking for writing simplified
doctests based on XML/HTML output. Use by importing <tt class="docutils literal">lxml.usedoctest</tt> or
<tt class="docutils literal">lxml.html.usedoctest</tt> from within a doctest.</li>
<li>New module <tt class="docutils literal">lxml.cssselect</tt> by Ian Bicking for selecting Elements with CSS
selectors.</li>
<li>New package <tt class="docutils literal">lxml.html</tt> written by Ian Bicking for advanced HTML
treatment.</li>
<li>Namespace class setup is now local to the <tt class="docutils literal">ElementNamespaceClassLookup</tt>
instance and no longer global.</li>
<li>Schematron validation (incomplete in libxml2)</li>
<li>Additional <tt class="docutils literal">stringify</tt> argument to <tt class="docutils literal">objectify.PyType()</tt> takes a
conversion function to strings to support setting text values from arbitrary
types.</li>
<li>Entity support through an <tt class="docutils literal">Entity</tt> factory and element classes. XML
parsers now have a <tt class="docutils literal">resolve_entities</tt> keyword argument that can be set to
False to keep entities in the document.</li>
<li><tt class="docutils literal">column</tt> field on error log entries to accompany the <tt class="docutils literal">line</tt> field</li>
<li>Error specific messages in XPath parsing and evaluation
NOTE: for evaluation errors, you will now get an XPathEvalError instead of
an XPathSyntaxError. To catch both, you can except on <tt class="docutils literal">XPathError</tt></li>
<li>The regular expression functions in XPath now support passing a node-set
instead of a string</li>
<li>Extended type annotation in objectify: new <tt class="docutils literal">xsiannotate()</tt> function</li>
<li>EXSLT RegExp support in standard XPath (not only XSLT)</li>
</ul>
</div>
<div class="section" id="id306">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Missing import in <tt class="docutils literal">lxml.html.clean</tt>.</li>
<li>Some Python 2.4-isms prevented lxml from building/running under
Python 2.3.</li>
<li>XPath on ElementTrees could crash when selecting the virtual root
node of the ElementTree.</li>
<li>Compilation <tt class="docutils literal"><span class="pre">--without-threading</span></tt> was buggy in alpha5/6.</li>
<li>Memory leak in the <tt class="docutils literal">parse()</tt> function.</li>
<li>Minor bugs in XSLT error message formatting.</li>
<li>Result document memory leak in target parser.</li>
<li>Target parser failed to report comments.</li>
<li>In the <tt class="docutils literal">lxml.html</tt> <tt class="docutils literal">iter_links</tt> method, links in <tt class="docutils literal"><object></tt>
tags weren't recognized. (Note: plugin-specific link parameters
still aren't recognized.) Also, the <tt class="docutils literal"><embed></tt> tag, though not
standard, is now included in <tt class="docutils literal">lxml.html.defs.special_inline_tags</tt>.</li>
<li>Using custom resolvers on XSLT stylesheets parsed from a string
could request ill-formed URLs.</li>
<li>With <tt class="docutils literal">lxml.doctestcompare</tt> if you do <tt class="docutils literal"><tag <span class="pre">xmlns="..."></span></tt> in your
output, it will then be namespace-neutral (before the ellipsis was
treated as a real namespace).</li>
<li>AttributeError in feed parser on parse errors</li>
<li>XML feed parser setup problem</li>
<li>Type annotation for unicode strings in <tt class="docutils literal">DataElement()</tt></li>
<li>lxml failed to serialise namespace declarations of elements other than the
root node of a tree</li>
<li>Race condition in XSLT where the resolver context leaked between concurrent
XSLT calls</li>
<li>lxml.etree did not check tag/attribute names</li>
<li>The XML parser did not report undefined entities as error</li>
<li>The text in exceptions raised by XML parsers, validators and XPath
evaluators now reports the first error that occurred instead of the last</li>
<li>Passing '' as XPath namespace prefix did not raise an error</li>
<li>Thread safety in XPath evaluators</li>
</ul>
</div>
<div class="section" id="id307">
<h2>Other changes</h2>
<ul class="simple">
<li>Exceptions carry only the part of the error log that is related to
the operation that caused the error.</li>
<li><tt class="docutils literal">XMLSchema()</tt> and <tt class="docutils literal">RelaxNG()</tt> now enforce passing the source
file/filename through the <tt class="docutils literal">file</tt> keyword argument.</li>
<li>The test suite now skips most doctests under Python 2.3.</li>
<li><tt class="docutils literal">make clean</tt> no longer removes the .c files (use <tt class="docutils literal">make
realclean</tt> instead)</li>
<li>Minor performance tweaks for Element instantiation and subelement
creation</li>
<li>Various places in the XPath, XSLT and iteration APIs now require
keyword-only arguments.</li>
<li>The argument order in <tt class="docutils literal">element.itersiblings()</tt> was changed to
match the order used in all other iteration methods. The second
argument ('preceding') is now a keyword-only argument.</li>
<li>The <tt class="docutils literal">getiterator()</tt> method on Elements and ElementTrees was
reverted to return an iterator as it did in lxml 1.x. The ET API
specification allows it to return either a sequence or an iterator,
and it traditionally returned a sequence in ET and an iterator in
lxml. However, it is now deprecated in favour of the <tt class="docutils literal">iter()</tt>
method, which should be used in new code wherever possible.</li>
<li>The 'pretty printed' serialisation of ElementTree objects now
inserts newlines at the root level between processing instructions,
comments and the root tag.</li>
<li>A 'pretty printed' serialisation is now terminated with a newline.</li>
<li>Second argument to <tt class="docutils literal">lxml.etree.Extension()</tt> helper is no longer
required, third argument is now a keyword-only argument <tt class="docutils literal">ns</tt>.</li>
<li><tt class="docutils literal">lxml.html.tostring</tt> takes an <tt class="docutils literal">encoding</tt> argument.</li>
<li>The module source files were renamed to "lxml.*.pyx", such as
"lxml.etree.pyx". This was changed for consistency with the way
Pyrex commonly handles package imports. The main effect is that
classes now know about their fully qualified class name, including
the package name of their module.</li>
<li>Keyword-only arguments in some API functions, especially in the
parsers and serialisers.</li>
<li>Tag name validation in lxml.etree (and lxml.html) now distinguishes
between HTML tags and XML tags based on the parser that was used to
parse or create them. HTML tags no longer reject any non-ASCII
characters in tag names but only spaces and the special characters
<tt class="docutils literal"><span class="pre"><>&/"'</span></tt>.</li>
<li>lxml.etree now emits a warning if you use XPath with libxml2 2.6.27
(which can crash on certain XPath errors)</li>
<li>Type annotation in objectify now preserves the already annotated type by
default to prevent losing type information that is already there.</li>
<li><tt class="docutils literal">element.getiterator()</tt> returns a list, use <tt class="docutils literal">element.iter()</tt> to retrieve
an iterator (ElementTree 1.3 compatible behaviour)</li>
<li>objectify.PyType for None is now called "NoneType"</li>
<li><tt class="docutils literal">el.getiterator()</tt> renamed to <tt class="docutils literal">el.iter()</tt>, following ElementTree 1.3 -
original name is still available as alias</li>
<li>In the public C-API, <tt class="docutils literal">findOrBuildNodeNs()</tt> was replaced by the more
generic <tt class="docutils literal">findOrBuildNodeNsPrefix</tt></li>
<li>Major refactoring in XPath/XSLT extension function code</li>
<li>Network access in parsers disabled by default</li>
</ul>
</div>
</div>
<div class="section" id="id308">
<h1>1.3.6 (2007-10-29)</h1>
<div class="section" id="id309">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Backported decref crash fix from 2.0</li>
<li>Well hidden free-while-in-use crash bug in ObjectPath</li>
</ul>
</div>
<div class="section" id="id310">
<h2>Other changes</h2>
<ul class="simple">
<li>The test suites now run <tt class="docutils literal">gc.collect()</tt> in the <tt class="docutils literal">tearDown()</tt>
methods. While this makes them take a lot longer to run, it also
makes it easier to link a specific test to garbage collection
problems that would otherwise appear in later tests.</li>
</ul>
</div>
</div>
<div class="section" id="id311">
<h1>1.3.5 (2007-10-22)</h1>
<div class="section" id="id312">
<h2>Features added</h2>
</div>
<div class="section" id="id313">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>lxml.etree could crash when adding more than 10000 namespaces to a
document</li>
<li>lxml failed to serialise namespace declarations of elements other
than the root node of a tree</li>
</ul>
</div>
</div>
<div class="section" id="id314">
<h1>1.3.4 (2007-08-30)</h1>
<div class="section" id="id315">
<h2>Features added</h2>
<ul class="simple">
<li>The <tt class="docutils literal">ElementMaker</tt> in <tt class="docutils literal">lxml.builder</tt> now accepts the keyword arguments
<tt class="docutils literal">namespace</tt> and <tt class="docutils literal">nsmap</tt> to set a namespace and nsmap for the Elements it
creates.</li>
<li>The <tt class="docutils literal">docinfo</tt> on ElementTree objects has new properties <tt class="docutils literal">internalDTD</tt>
and <tt class="docutils literal">externalDTD</tt> that return a DTD object for the internal or external
subset of the document respectively.</li>
<li>Serialising an ElementTree now includes any internal DTD subsets that are
part of the document, as well as comments and PIs that are siblings of the
root node.</li>
</ul>
</div>
<div class="section" id="id316">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Parsing with the <tt class="docutils literal">no_network</tt> option could fail</li>
</ul>
</div>
<div class="section" id="id317">
<h2>Other changes</h2>
<ul class="simple">
<li>lxml now raises a TagNameWarning about tag names containing ':' instead of
an Error as 1.3.3 did. The reason is that a number of projects currently
misuse the previous lack of tag name validation to generate namespace
prefixes without declaring namespaces. Apart from the danger of generating
broken XML this way, it also breaks most of the namespace-aware tools in
XML, including XPath, XSLT and validation. lxml 1.3.x will continue to
support this bug with a Warning, while lxml 2.0 will be strict about
well-formed tag names (not only regarding ':').</li>
<li>Serialising an Element no longer includes its comment and PI siblings (only
ElementTree serialisation includes them).</li>
</ul>
</div>
</div>
<div class="section" id="id318">
<h1>1.3.3 (2007-07-26)</h1>
<div class="section" id="id319">
<h2>Features added</h2>
<ul class="simple">
<li>ElementTree compatible parser <tt class="docutils literal">ETCompatXMLParser</tt> strips processing
instructions and comments while parsing XML</li>
<li>Parsers now support stripping PIs (keyword argument 'remove_pis')</li>
<li><tt class="docutils literal">etree.fromstring()</tt> now supports parsing both HTML and XML, depending on
the parser you pass.</li>
<li>Support <tt class="docutils literal">base_url</tt> keyword argument in <tt class="docutils literal">HTML()</tt> and <tt class="docutils literal">XML()</tt></li>
</ul>
</div>
<div class="section" id="id320">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Parsing from Python Unicode strings failed on some platforms</li>
<li><tt class="docutils literal">Element()</tt> did not raise an exception on tag names containing ':'</li>
<li><tt class="docutils literal">Element.getiterator(tag)</tt> did not accept <tt class="docutils literal">Comment</tt> and
<tt class="docutils literal">ProcessingInstruction</tt> as tags. It also accepts <tt class="docutils literal">Element</tt> now.</li>
</ul>
</div>
</div>
<div class="section" id="id321">
<h1>1.3.2 (2007-07-03)</h1>
<div class="section" id="id322">
<h2>Features added</h2>
</div>
<div class="section" id="id323">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>"deallocating None" crash bug</li>
</ul>
</div>
</div>
<div class="section" id="id324">
<h1>1.3.1 (2007-07-02)</h1>
<div class="section" id="id325">
<h2>Features added</h2>
<ul class="simple">
<li>objectify.DataElement now supports setting values from existing data
elements (not just plain Python types) and reuses defined namespaces etc.</li>
<li>E-factory support for lxml.objectify (<tt class="docutils literal">objectify.E</tt>)</li>
</ul>
</div>
<div class="section" id="id326">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Better way to prevent crashes in Element proxy cleanup code</li>
<li>objectify.DataElement didn't set up None value correctly</li>
<li>objectify.DataElement didn't check the value against the provided type hints</li>
<li>Reference-counting bug in <tt class="docutils literal">Element.attrib.pop()</tt></li>
</ul>
</div>
</div>
<div class="section" id="id327">
<h1>1.3 (2007-06-24)</h1>
<div class="section" id="id328">
<h2>Features added</h2>
<ul class="simple">
<li>Module <tt class="docutils literal">lxml.pyclasslookup</tt> module implements an Element class lookup
scheme that can access the entire tree in read-only mode to help determining
a suitable Element class</li>
<li>Parsers take a <tt class="docutils literal">remove_comments</tt> keyword argument that skips over comments</li>
<li><tt class="docutils literal">parse()</tt> function in <tt class="docutils literal">objectify</tt>, corresponding to <tt class="docutils literal">XML()</tt> etc.</li>
<li><tt class="docutils literal">Element.addnext(el)</tt> and <tt class="docutils literal">Element.addprevious(el)</tt> methods to support
adding processing instructions and comments around the root node</li>
<li><tt class="docutils literal">Element.attrib</tt> was missing <tt class="docutils literal">clear()</tt> and <tt class="docutils literal">pop()</tt> methods</li>
<li>Extended type annotation in objectify: cleaner annotation namespace setup
plus new <tt class="docutils literal">deannotate()</tt> function</li>
<li>Support for custom Element class instantiation in lxml.sax: passing a
<tt class="docutils literal">makeelement</tt> function to the ElementTreeContentHandler will reuse the
lookup context of that function</li>
<li>'.' represents empty ObjectPath (identity)</li>
<li><tt class="docutils literal">Element.values()</tt> to accompany the existing <tt class="docutils literal">.keys()</tt> and <tt class="docutils literal">.items()</tt></li>
<li><tt class="docutils literal">collectAttributes()</tt> C-function to build a list of attribute
keys/values/items for a libxml2 node</li>
<li><tt class="docutils literal">DTD</tt> validator class (like <tt class="docutils literal">RelaxNG</tt> and <tt class="docutils literal">XMLSchema</tt>)</li>
<li>HTML generator helpers by Fredrik Lundh in <tt class="docutils literal">lxml.htmlbuilder</tt></li>
<li><tt class="docutils literal">ElementMaker</tt> XML generator by Fredrik Lundh in <tt class="docutils literal">lxml.builder.E</tt></li>
<li>Support for pickling <tt class="docutils literal">objectify.ObjectifiedElement</tt> objects to XML</li>
<li><tt class="docutils literal">update()</tt> method on Element.attrib</li>
<li>Optimised replacement for libxml2's _xmlReconsiliateNs(). This allows lxml
a better handling of namespaces when moving elements between documents.</li>
</ul>
</div>
<div class="section" id="id329">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Removing Elements from a tree could make them lose their namespace
declarations</li>
<li><tt class="docutils literal">ElementInclude</tt> didn't honour base URL of original document</li>
<li>Replacing the children slice of an Element would cut off the tails of the
original children</li>
<li><tt class="docutils literal">Element.getiterator(tag)</tt> did not accept <tt class="docutils literal">Comment</tt> and
<tt class="docutils literal">ProcessingInstruction</tt> as tags</li>
<li>API functions now check incoming strings for XML conformity. Zero bytes or
low ASCII characters are no longer accepted (AssertionError).</li>
<li>XSLT parsing failed to pass resolver context on to imported documents</li>
<li>passing '' as namespace prefix in nsmap could be passed through to libxml2</li>
<li>Objectify couldn't handle prefixed XSD type names in <tt class="docutils literal">xsi:type</tt></li>
<li>More ET compatible behaviour when writing out XML declarations or not</li>
<li>More robust error handling in <tt class="docutils literal">iterparse()</tt></li>
<li>Documents lost their top-level PIs and comments on serialisation</li>
<li>lxml.sax failed on comments and PIs. Comments are now properly ignored and
PIs are copied.</li>
<li>Possible memory leaks in namespace handling when moving elements between
documents</li>
</ul>
</div>
<div class="section" id="id330">
<h2>Other changes</h2>
<ul class="simple">
<li>major restructuring in the documentation</li>
</ul>
</div>
</div>
<div class="section" id="id331">
<h1>1.2.1 (2007-02-27)</h1>
<div class="section" id="id332">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Build fixes for MS compiler</li>
<li>Item assignments to special names like <tt class="docutils literal"><span class="pre">element["text"]</span></tt> failed</li>
<li>Renamed ObjectifiedDataElement.__setText() to _setText() to make it easier
to access</li>
<li>The pattern for attribute names in ObjectPath was too restrictive</li>
</ul>
</div>
</div>
<div class="section" id="id333">
<h1>1.2 (2007-02-20)</h1>
<div class="section" id="id334">
<h2>Features added</h2>
<ul class="simple">
<li>Rich comparison of QName objects</li>
<li>Support for regular expressions in benchmark selection</li>
<li>get/set emulation (not .attrib!) for attributes on processing instructions</li>
<li>ElementInclude Python module for ElementTree compatible XInclude processing
that honours custom resolvers registered with the source document</li>
<li>ElementTree.parser property holds the parser used to parse the document</li>
<li>setup.py has been refactored for greater readability and flexibility</li>
<li>--rpath flag to setup.py to induce automatic linking-in of dynamic library
runtime search paths has been renamed to --auto-rpath. This makes it
possible to pass an --rpath directly to distutils; previously this was being
shadowed.</li>
</ul>
</div>
<div class="section" id="id335">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Element instantiation now uses locks to prevent race conditions with threads</li>
<li>ElementTree.write() did not raise an exception when the file was not writable</li>
<li>Error handling could crash under Python <= 2.4.1 - fixed by disabling thread
support in these environments</li>
<li>Element.find*() did not accept QName objects as path</li>
</ul>
</div>
<div class="section" id="id336">
<h2>Other changes</h2>
<ul class="simple">
<li>code cleanup: redundant _NodeBase super class merged into _Element class
Note: although the impact should be zero in most cases, this change breaks
the compatibility of the public C-API</li>
</ul>
</div>
</div>
<div class="section" id="id337">
<h1>1.1.2 (2006-10-30)</h1>
<div class="section" id="id338">
<h2>Features added</h2>
<ul class="simple">
<li>Data elements in objectify support repr(), which is now used by dump()</li>
<li>Source distribution now ships with a patched Pyrex</li>
<li>New C-API function makeElement() to create new elements with text,
tail, attributes and namespaces</li>
<li>Reuse original parser flags for XInclude</li>
<li>Simplified support for handling XSLT processing instructions</li>
</ul>
</div>
<div class="section" id="id339">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Parser resources were not freed before the next parser run</li>
<li>Open files and XML strings returned by Python resolvers were not
closed/freed</li>
<li>Crash in the IDDict returned by XMLDTDID</li>
<li>Copying Comments and ProcessingInstructions failed</li>
<li>Memory leak for external URLs in _XSLTProcessingInstruction.parseXSL()</li>
<li>Memory leak when garbage collecting tailed root elements</li>
<li>HTML script/style content was not propagated to .text</li>
<li>Show text xincluded between text nodes correctly in .text and .tail</li>
<li>'integer * objectify.StringElement' operation was not supported</li>
</ul>
</div>
</div>
<div class="section" id="id340">
<h1>1.1.1 (2006-09-21)</h1>
<div class="section" id="id341">
<h2>Features added</h2>
<ul class="simple">
<li>XSLT profiling support (<tt class="docutils literal">profile_run</tt> keyword)</li>
<li>countchildren() method on objectify.ObjectifiedElement</li>
<li>Support custom elements for tree nodes in lxml.objectify</li>
</ul>
</div>
<div class="section" id="id342">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>lxml.objectify failed to support long data values (e.g., "123L")</li>
<li>Error messages from XSLT did not reach <tt class="docutils literal">XSLT.error_log</tt></li>
<li>Factories objectify.Element() and objectify.DataElement() were missing
<tt class="docutils literal">attrib</tt> and <tt class="docutils literal">nsmap</tt> keyword arguments</li>
<li>Changing the default parser in lxml.objectify did not update the factories
Element() and DataElement()</li>
<li>Let lxml.objectify.Element() always generate tree elements (not data
elements)</li>
<li>Build under Windows failed ('0' bug in patched Pyrex version)</li>
</ul>
</div>
</div>
<div class="section" id="id343">
<h1>1.1 (2006-09-13)</h1>
<div class="section" id="id344">
<h2>Features added</h2>
<ul class="simple">
<li>Comments and processing instructions return '<!-- comment -->' and
'<?pi-target content?>' for repr()</li>
<li>Parsers are now the preferred (and default) place where element class lookup
schemes should be registered. Namespace lookup is no longer supported by
default.</li>
<li>Support for Python 2.5 beta</li>
<li>Unlock the GIL for deep copying documents and for XPath()</li>
<li>New <tt class="docutils literal">compact</tt> keyword argument for parsing read-only documents</li>
<li>Support for parser options in iterparse()</li>
<li>The <tt class="docutils literal">namespace</tt> axis is supported in XPath and returns (prefix, URI)
tuples</li>
<li>The XPath expression "/" now returns an empty list instead of raising an
exception</li>
<li>XML-Object API on top of lxml (lxml.objectify)</li>
<li>Customizable Element class lookup:<ul>
<li>different pre-implemented lookup mechanisms</li>
<li>support for externally provided lookup functions</li>
</ul>
</li>
<li>Support for processing instructions (ET-like, not compatible)</li>
<li>Public C-level API for independent extension modules</li>
<li>Module level <tt class="docutils literal">iterwalk()</tt> function as 'iterparse' for trees</li>
<li>Module level <tt class="docutils literal">iterparse()</tt> function similar to ElementTree (see
documentation for differences)</li>
<li>Element.nsmap property returns a mapping of all namespace prefixes known at
the Element to their namespace URI</li>
<li>Reentrant threading support in RelaxNG, XMLSchema and XSLT</li>
<li>Threading support in parsers and serializers:<ul>
<li>All in-memory operations (tostring, parse(StringIO), etc.) free the GIL</li>
<li>File operations (on file names) free the GIL</li>
<li>Reading from file-like objects frees the GIL and reacquires it for reading</li>
<li>Serialisation to file-like objects is single-threaded (high lock overhead)</li>
</ul>
</li>
<li>Element iteration over XPath axes:<ul>
<li>Element.iterdescendants() iterates over the descendants of an element</li>
<li>Element.iterancestors() iterates over the ancestors of an element (from
parent to parent)</li>
<li>Element.itersiblings() iterates over either the following or preceding
siblings of an element</li>
<li>Element.iterchildren() iterates over the children of an element in either
direction</li>
<li>All iterators support the <tt class="docutils literal">tag</tt> keyword argument to restrict the
generated elements</li>
</ul>
</li>
<li>Element.getnext() and Element.getprevious() return the direct siblings of an
element</li>
</ul>
</div>
<div class="section" id="id345">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>filenames with local 8-bit encoding were not supported</li>
<li>1.1beta did not compile under Python 2.3</li>
<li>ignore unknown 'pyval' attribute values in objectify</li>
<li>objectify.ObjectifiedElement.addattr() failed to accept Elements and Lists</li>
<li>objectify.ObjectPath.setattr() failed to accept Elements and Lists</li>
<li>XPathSyntaxError now inherits from XPathError</li>
<li>Threading race conditions in RelaxNG and XMLSchema</li>
<li>Crash when mixing elements from XSLT results into other trees, concurrent
XSLT is only allowed when the stylesheet was parsed in the main thread</li>
<li>The EXSLT <tt class="docutils literal">regexp:match</tt> function now works as defined (except for some
differences in the regular expression syntax)</li>
<li>Setting element.text to '' returned None on request, not the empty string</li>
<li><tt class="docutils literal">iterparse()</tt> could crash on long XML files</li>
<li>Creating documents no longer copies the parser for later URL resolving. For
performance reasons, only a reference is kept. Resolver updates on the
parser will now be reflected by documents that were parsed before the
change. Although this should rarely become visible, it is a behavioral
change from 1.0.</li>
</ul>
</div>
</div>
<div class="section" id="id346">
<h1>1.0.4 (2006-09-09)</h1>
<div class="section" id="id347">
<h2>Features added</h2>
<ul class="simple">
<li>List-like <tt class="docutils literal">Element.extend()</tt> method</li>
</ul>
</div>
<div class="section" id="id348">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash in tail handling in <tt class="docutils literal">Element.replace()</tt></li>
</ul>
</div>
</div>
<div class="section" id="id349">
<h1>1.0.3 (2006-08-08)</h1>
<div class="section" id="id350">
<h2>Features added</h2>
<ul class="simple">
<li>Element.replace(old, new) method to replace a subelement by another one</li>
</ul>
</div>
<div class="section" id="id351">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Crash when mixing elements from XSLT results into other trees</li>
<li>Copying/deepcopying did not work for ElementTree objects</li>
<li>Setting an attribute to a non-string value did not raise an exception</li>
<li>Element.remove() deleted the tail text from the removed Element</li>
</ul>
</div>
</div>
<div class="section" id="id352">
<h1>1.0.2 (2006-06-27)</h1>
<div class="section" id="id353">
<h2>Features added</h2>
<ul class="simple">
<li>Support for setting a custom default Element class as opposed to namespace
specific classes (which still override the default class)</li>
</ul>
</div>
<div class="section" id="id354">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Rare exceptions in Python list functions were not handled</li>
<li>Parsing accepted unicode strings with XML encoding declaration in certain
cases</li>
<li>Parsing 8-bit encoded strings from StringIO objects raised an exception</li>
<li>Module function <tt class="docutils literal">initThread()</tt> was removed - useless (and never worked)</li>
<li>XSLT and parser exception messages include the error line number</li>
</ul>
</div>
</div>
<div class="section" id="id355">
<h1>1.0.1 (2006-06-09)</h1>
<div class="section" id="id356">
<h2>Features added</h2>
<ul class="simple">
<li>Repeated calls to Element.attrib now efficiently return the same instance</li>
</ul>
</div>
<div class="section" id="id357">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Document deallocation could crash in certain garbage collection scenarios</li>
<li>Extension function calls in XSLT variable declarations could break the
stylesheet and crash on repeated calls</li>
<li>Deep copying Elements could lose namespaces declared in parents</li>
<li>Deep copying Elements did not copy tail</li>
<li>Parsing file(-like) objects failed to load external entities</li>
<li>Parsing 8-bit strings from file(-like) objects raised an exception</li>
<li>xsl:include failed when the stylesheet was parsed from a file-like object</li>
<li>lxml.sax.ElementTreeProducer did not call startDocument() / endDocument()</li>
<li>MSVC compiler complained about long strings (supports only 2048 bytes)</li>
</ul>
</div>
</div>
<div class="section" id="id358">
<h1>1.0 (2006-06-01)</h1>
<div class="section" id="id359">
<h2>Features added</h2>
<ul class="simple">
<li>Element.getiterator() and the findall() methods support finding arbitrary
elements from a namespace (pattern <tt class="docutils literal">{namespace}*</tt>)</li>
<li>Another speedup in tree iteration code</li>
<li>General speedup of Python Element object creation and deallocation</li>
<li>Writing C14N no longer serializes in memory (reduced memory footprint)</li>
<li>PyErrorLog for error logging through the Python <tt class="docutils literal">logging</tt> module</li>
<li><tt class="docutils literal">Element.getroottree()</tt> returns an ElementTree for the root node of the
document that contains the element.</li>
<li>ElementTree.getpath(element) returns a simple, absolute XPath expression to
find the element in the tree structure</li>
<li>Error logs have a <tt class="docutils literal">last_error</tt> attribute for convenience</li>
<li>Comment texts can be changed through the API</li>
<li>Formatted output via <tt class="docutils literal">pretty_print</tt> keyword in serialization functions</li>
<li>XSLT can block access to file system and network via <tt class="docutils literal">XSLTAccessControl</tt></li>
<li>ElementTree.write() no longer serializes in memory (reduced memory
footprint)</li>
<li>Speedup of Element.findall(tag) and Element.getiterator(tag)</li>
<li>Support for writing the XML representation of Elements and ElementTrees to
Python unicode strings via <tt class="docutils literal">etree.tounicode()</tt></li>
<li>Support for writing XSLT results to Python unicode strings via <tt class="docutils literal">unicode()</tt></li>
<li>Parsing a unicode string no longer copies the string (reduced memory
footprint)</li>
<li>Parsing file-like objects reads chunks rather than the whole file (reduced
memory footprint)</li>
<li>Parsing StringIO objects from the start avoids copying the string (reduced
memory footprint)</li>
<li>Read-only 'docinfo' attribute in ElementTree class holds DOCTYPE
information, original encoding and XML version as seen by the parser</li>
<li>etree module can be compiled without libxslt by commenting out the line
<tt class="docutils literal">include "xslt.pxi"</tt> near the end of the etree.pyx source file</li>
<li>Better error messages in parser exceptions</li>
<li>Error reporting also works in XSLT</li>
<li>Support for custom document loaders (URI resolvers) in parsers and XSLT,
resolvers are registered at parser level</li>
<li>Implementation of exslt:regexp for XSLT based on the Python 're' module,
enabled by default, can be switched off with 'regexp=False' keyword argument</li>
<li>Support for exslt extensions (libexslt) and libxslt extra functions
(node-set, document, write, output)</li>
<li>Substantial speedup in XPath.evaluate()</li>
<li>HTMLParser for parsing (broken) HTML</li>
<li>XMLDTDID function parses XML into tuple (root node, ID dict) based on xml:id
implementation of libxml2 (as opposed to ET compatible XMLID)</li>
</ul>
</div>
<div class="section" id="id360">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Memory leak in Element.__setitem__</li>
<li>Memory leak in Element.attrib.items() and Element.attrib.values()</li>
<li>Memory leak in XPath extension functions</li>
<li>Memory leak in unicode related setup code</li>
<li>Element now raises ValueError on empty tag names</li>
<li>Namespace fixing after moving elements between documents could fail if the
source document was freed too early</li>
<li>Setting namespace-less tag names on namespaced elements ('{ns}t' -> 't')
didn't reset the namespace</li>
<li>Unknown constants from newer libxml2 versions could raise exceptions in the
error handlers</li>
<li>lxml.etree compiles much faster</li>
<li>On libxml2 <= 2.6.22, parsing strings with encoding declaration could fail
in certain cases</li>
<li>Document reference in ElementTree objects was not updated when the root
element was moved to a different document</li>
<li>Running absolute XPath expressions on an Element now evaluates against the
root tree</li>
<li>Evaluating absolute XPath expressions (<tt class="docutils literal">/*</tt>) on an ElementTree could fail</li>
<li>Crashes when calling XSLT, RelaxNG, etc. with uninitialized ElementTree
objects</li>
<li>Removed public function <tt class="docutils literal">initThreadLogging()</tt>, replaced by more general
<tt class="docutils literal">initThread()</tt> which fixes a number of setup problems in threads</li>
<li>Memory leak when using iconv encoders in tostring/write</li>
<li>Deep copying Elements and ElementTrees maintains the document information</li>
<li>Serialization functions raise LookupError for unknown encodings</li>
<li>Memory deallocation crash resulting from deep copying elements</li>
<li>Some ElementTree methods could crash if the root node was not initialized
(neither file nor element passed to the constructor)</li>
<li>Element/SubElement failed to set attribute namespaces from passed <tt class="docutils literal">attrib</tt>
dictionary</li>
<li><tt class="docutils literal">tostring()</tt> adds an XML declaration for non-ASCII encodings</li>
<li><tt class="docutils literal">tostring()</tt> failed to serialize encodings that contain 0-bytes</li>
<li>ElementTree.xpath() and XPathDocumentEvaluator were not using the
ElementTree root node as reference point</li>
<li>Calling <tt class="docutils literal"><span class="pre">document('')</span></tt> in XSLT failed to return the stylesheet</li>
</ul>
</div>
</div>
<div class="section" id="id361">
<h1>0.9.2 (2006-05-10)</h1>
<div class="section" id="id362">
<h2>Features added</h2>
<ul class="simple">
<li>Speedup for Element.makeelement(): the new element reuses the original
libxml2 document instead of creating a new empty one</li>
<li>Speedup for reversed() iteration over element children (Py2.4+ only)</li>
<li>ElementTree compatible QName class</li>
<li>RelaxNG and XMLSchema accept any Element, not only ElementTrees</li>
</ul>
</div>
<div class="section" id="id363">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>str(xslt_result) was broken for XSLT output other than UTF-8</li>
<li>Memory leak if write_c14n fails to write the file after conversion</li>
<li>Crash in XMLSchema and RelaxNG when passing non-schema documents</li>
<li>Memory leak in RelaxNG() when RelaxNGParseError is raised</li>
</ul>
</div>
</div>
<div class="section" id="id364">
<h1>0.9.1 (2006-03-30)</h1>
<div class="section" id="id365">
<h2>Features added</h2>
<ul class="simple">
<li>lxml.sax.ElementTreeContentHandler checks closing elements and raises
SaxError on mismatch</li>
<li>lxml.sax.ElementTreeContentHandler supports namespace-less SAX events
(startElement, endElement) and defaults to empty attributes (keyword
argument)</li>
<li>Speedup for repeatedly accessing element tag names</li>
<li>Minor API performance improvements</li>
</ul>
</div>
<div class="section" id="id366">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Memory deallocation bug when using XSLT output method "html"</li>
<li>sax.py was handling UTF-8 encoded tag names where it shouldn't</li>
<li>lxml.tests package will no longer be installed (is still in source tar)</li>
</ul>
</div>
</div>
<div class="section" id="id367">
<h1>0.9 (2006-03-20)</h1>
<div class="section" id="id368">
<h2>Features added</h2>
<ul class="simple">
<li>Error logging API for libxml2 error messages</li>
<li>Various performance improvements</li>
<li>Benchmark script for lxml, ElementTree and cElementTree</li>
<li>Support for registering extension functions through new FunctionNamespace
class (see doc/extensions.txt)</li>
<li>ETXPath class for XPath expressions in ElementTree notation ('//{ns}tag')</li>
<li>Support for variables in XPath expressions (also in XPath class)</li>
<li>XPath class for compiled XPath expressions</li>
<li>XMLID module level function (ElementTree compatible)</li>
<li>XMLParser API for customized libxml2 parser configuration</li>
<li>Support for custom Element classes through new Namespace API (see
doc/namespace_extensions.txt)</li>
<li>Common exception base class LxmlError for module exceptions</li>
<li>real iterator support in iter(Element), Element.getiterator()</li>
<li>XSLT objects are callable, result trees support str()</li>
<li>Added MANIFEST.in for easier creation of RPM files.</li>
<li>'getparent' method on elements allows navigation to an element's
parent element.</li>
<li>Python core compatible SAX tree builder and SAX event generator. See
doc/sax.txt for more information.</li>
</ul>
</div>
<div class="section" id="id369">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Segfaults and memory leaks in various API functions of Element</li>
<li>Segfault in XSLT.tostring()</li>
<li>ElementTree objects no longer interfere, Elements can be root of different
ElementTrees at the same time</li>
<li>document('') works in XSLT documents read from files (in-memory documents
cannot support this due to libxslt deficiencies)</li>
</ul>
</div>
</div>
<div class="section" id="id370">
<h1>0.8 (2005-11-03)</h1>
<div class="section" id="id371">
<h2>Features added</h2>
<ul class="simple">
<li>Support for copy.deepcopy() on elements. copy.copy() works also, but
does the same thing, and does <em>not</em> create a shallow copy, as that
makes no sense in the context of libxml2 trees. This means a
potential incompatibility with ElementTree, but there's more chance
that it works than if copy.copy() isn't supported at all.</li>
<li>Increased compatibility with (c)ElementTree; .parse() on ElementTree is
supported and parsing of gzipped XML files works.</li>
<li>implemented index() on elements, allowing one to find the index of a
SubElement.</li>
</ul>
</div>
<div class="section" id="id372">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Use xslt-config instead of xml2-config to find out libxml2
directories to take into account a case where libxslt is installed
in a different directory than libxslt.</li>
<li>Eliminate crash condition in iteration when text nodes are changed.</li>
<li>Passing 'None' to tostring() does not result in a segfault anymore,
but an AssertionError.</li>
<li>Some test fixes for Windows.</li>
<li>Raise XMLSyntaxError and XPathSyntaxError instead of plain python
syntax errors. This should be less confusing.</li>
<li>Fixed error with uncaught exception in Pyrex code.</li>
<li>Calling lxml.etree.fromstring('') throws XMLSyntaxError instead of a
segfault.</li>
<li>has_key() works on attrib. 'in' tests also work correctly on attrib.</li>
<li>INSTALL.txt was saying 2.2.16 instead of 2.6.16 as a supported
libxml2 version, as it should.</li>
<li>Passing a UTF-8 encoded string to the XML() function would fail;
fixed.</li>
</ul>
</div>
</div>
<div class="section" id="id373">
<h1>0.7 (2005-06-15)</h1>
<div class="section" id="id374">
<h2>Features added</h2>
<ul class="simple">
<li>parameters (XPath expressions) can be passed to XSLT using keyword
parameters.</li>
<li>Simple XInclude support. Calling the xinclude() method on a tree
will process any XInclude statements in the document.</li>
<li>XMLSchema support. Use the XMLSchema class or the convenience
xmlschema() method on a tree to do XML Schema (XSD) validation.</li>
<li>Added convenience xslt() method on tree. This is less efficient
than the XSLT object, but makes it easier to write quick code.</li>
<li>Added convenience relaxng() method on tree. This is less efficient
than the RelaxNG object, but makes it easier to write quick code.</li>
<li>Make it possible to use XPathEvaluator with elements as well. The
XPathEvaluator in this case will retain the element so multiple
XPath queries can be made against one element efficiently. This
replaces the second argument to the .evaluate() method that existed
previously.</li>
<li>Allow registerNamespace() to be called on an XPathEvaluator, after
creation, to add additional namespaces. Also allow registerNamespaces(),
which does the same for a namespace dictionary.</li>
<li>Add 'prefix' attribute to element to be able to read prefix information.
This is entirely read-only.</li>
<li>It is possible to supply an extra nsmap keyword parameter to
the Element() and SubElement() constructors, which supplies a
prefix to namespace URI mapping. This will create namespace
prefix declarations on these elements and these prefixes will show up
in XML serialization.</li>
</ul>
</div>
<div class="section" id="id375">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Killed yet another memory management related bug: trees created
using newDoc would not get a libxml2-level dictionary, which caused
problems when deallocating these documents later if they contained a
node that came from a document with a dictionary.</li>
<li>Moving namespaced elements between documents was problematic as
references to the original document would remain. This has been fixed
by applying xmlReconciliateNs() after each move operation.</li>
<li>Can pass None to 'dump()' without segfaults.</li>
<li>tostring() works properly for non-root elements as well.</li>
<li>Cleaned out the tostring() method so it should handle encoding
correctly.</li>
<li>Cleaned out the ElementTree.write() method so it should handle encoding
correctly. Writing directly to a file should also be faster, as there is no
need to go through a Python string in that case. Made sure the test cases
test both serializing to StringIO as well as serializing to a real file.</li>
</ul>
</div>
</div>
<div class="section" id="id376">
<h1>0.6 (2005-05-14)</h1>
<div class="section" id="id377">
<h2>Features added</h2>
<ul class="simple">
<li>Changed setup.py so that library_dirs is also guessed. This should
help with compilation on the Mac OS X platform, where otherwise the
wrong library (shipping with the OS) could be picked up.</li>
<li>Tweaked setup.py so that it picks up the version from version.txt.</li>
</ul>
</div>
<div class="section" id="id378">
<h2>Bugs fixed</h2>
<ul class="simple">
<li>Do the right thing when handling namespaced attributes.</li>
<li>fix bug where tostring() moved nodes into new documents. tostring()
had very nasty side-effects before this fix, sorry!</li>
</ul>
</div>
</div>
<div class="section" id="id379">
<h1>0.5.1 (2005-04-09)</h1>
<ul class="simple">
<li>Python 2.2 compatibility fixes.</li>
<li>unicode fixes in Element() and Comment() as well as XML(); unicode
input wasn't properly being UTF-8 encoded.</li>
</ul>
</div>
<div class="section" id="id380">
<h1>0.5 (2005-04-08)</h1>
<p>Initial public release.</p>
</div>
</div>
<div class="footer">
<hr class="footer" />
Generated on: 2018-03-21.
</div>
</body>
</html>
|