/usr/share/pyshared/py/_builtin.py is in python-py 1.4.8-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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try:
reversed = reversed
except NameError:
def reversed(sequence):
"""reversed(sequence) -> reverse iterator over values of the sequence
Return a reverse iterator
"""
if hasattr(sequence, '__reversed__'):
return sequence.__reversed__()
if not hasattr(sequence, '__getitem__'):
raise TypeError("argument to reversed() must be a sequence")
return reversed_iterator(sequence)
class reversed_iterator(object):
def __init__(self, seq):
self.seq = seq
self.remaining = len(seq)
def __iter__(self):
return self
def next(self):
i = self.remaining
if i > 0:
i -= 1
item = self.seq[i]
self.remaining = i
return item
raise StopIteration
def __length_hint__(self):
return self.remaining
try:
any = any
except NameError:
def any(iterable):
for x in iterable:
if x:
return True
return False
try:
all = all
except NameError:
def all(iterable):
for x in iterable:
if not x:
return False
return True
try:
sorted = sorted
except NameError:
builtin_cmp = cmp # need to use cmp as keyword arg
def sorted(iterable, cmp=None, key=None, reverse=0):
use_cmp = None
if key is not None:
if cmp is None:
def use_cmp(x, y):
return builtin_cmp(x[0], y[0])
else:
def use_cmp(x, y):
return cmp(x[0], y[0])
l = [(key(element), element) for element in iterable]
else:
if cmp is not None:
use_cmp = cmp
l = list(iterable)
if use_cmp is not None:
l.sort(use_cmp)
else:
l.sort()
if reverse:
l.reverse()
if key is not None:
return [element for (_, element) in l]
return l
try:
set, frozenset = set, frozenset
except NameError:
from sets import set, frozenset
# pass through
enumerate = enumerate
try:
BaseException = BaseException
except NameError:
BaseException = Exception
try:
GeneratorExit = GeneratorExit
except NameError:
class GeneratorExit(Exception):
""" This exception is never raised, it is there to make it possible to
write code compatible with CPython 2.5 even in lower CPython
versions."""
pass
GeneratorExit.__module__ = 'exceptions'
_sysex = (KeyboardInterrupt, SystemExit, MemoryError, GeneratorExit)
if sys.version_info >= (3, 0):
exec ("print_ = print ; exec_=exec")
import builtins
# some backward compatibility helpers
_basestring = str
def _totext(obj, encoding=None, errors=None):
if isinstance(obj, bytes):
if errors is None:
obj = obj.decode(encoding)
else:
obj = obj.decode(encoding, errors)
elif not isinstance(obj, str):
obj = str(obj)
return obj
def _isbytes(x):
return isinstance(x, bytes)
def _istext(x):
return isinstance(x, str)
def _getimself(function):
return getattr(function, '__self__', None)
def _getfuncdict(function):
return getattr(function, "__dict__", None)
def _getcode(function):
return getattr(function, "__code__", None)
def execfile(fn, globs=None, locs=None):
if globs is None:
back = sys._getframe(1)
globs = back.f_globals
locs = back.f_locals
del back
elif locs is None:
locs = globs
fp = open(fn, "r")
try:
source = fp.read()
finally:
fp.close()
co = compile(source, fn, "exec", dont_inherit=True)
exec_(co, globs, locs)
def callable(obj):
return hasattr(obj, "__call__")
else:
import __builtin__ as builtins
_totext = unicode
_basestring = basestring
execfile = execfile
callable = callable
def _isbytes(x):
return isinstance(x, str)
def _istext(x):
return isinstance(x, unicode)
def _getimself(function):
return getattr(function, 'im_self', None)
def _getfuncdict(function):
return getattr(function, "__dict__", None)
def _getcode(function):
try:
return getattr(function, "__code__")
except AttributeError:
return getattr(function, "func_code", None)
def print_(*args, **kwargs):
""" minimal backport of py3k print statement. """
sep = ' '
if 'sep' in kwargs:
sep = kwargs.pop('sep')
end = '\n'
if 'end' in kwargs:
end = kwargs.pop('end')
file = 'file' in kwargs and kwargs.pop('file') or sys.stdout
if kwargs:
args = ", ".join([str(x) for x in kwargs])
raise TypeError("invalid keyword arguments: %s" % args)
at_start = True
for x in args:
if not at_start:
file.write(sep)
file.write(str(x))
at_start = False
file.write(end)
def exec_(obj, globals=None, locals=None):
""" minimal backport of py3k exec statement. """
__tracebackhide__ = True
if globals is None:
frame = sys._getframe(1)
globals = frame.f_globals
if locals is None:
locals = frame.f_locals
elif locals is None:
locals = globals
exec2(obj, globals, locals)
if sys.version_info >= (3,0):
def _reraise(cls, val, tb):
__tracebackhide__ = True
assert hasattr(val, '__traceback__')
raise val
else:
exec ("""
def _reraise(cls, val, tb):
__tracebackhide__ = True
raise cls, val, tb
def exec2(obj, globals, locals):
__tracebackhide__ = True
exec obj in globals, locals
""")
def _tryimport(*names):
""" return the first successfully imported module. """
assert names
for name in names:
try:
__import__(name)
except ImportError:
excinfo = sys.exc_info()
else:
return sys.modules[name]
_reraise(*excinfo)
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