/usr/share/pyshared/imdb/utils.py is in python-imdbpy 4.9-1.
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utils module (imdb package).
This module provides basic utilities for the imdb package.
Copyright 2004-2012 Davide Alberani <da@erlug.linux.it>
2009 H. Turgut Uyar <uyar@tekir.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
from __future__ import generators
import re
import string
import logging
from copy import copy, deepcopy
from time import strptime, strftime
from imdb import VERSION
from imdb import linguistics
from imdb._exceptions import IMDbParserError
# Logger for imdb.utils module.
_utils_logger = logging.getLogger('imdbpy.utils')
# The regular expression for the "long" year format of IMDb, like
# "(1998)" and "(1986/II)", where the optional roman number (that I call
# "imdbIndex" after the slash is used for movies with the same title
# and year of release.
# XXX: probably L, C, D and M are far too much! ;-)
re_year_index = re.compile(r'\(([0-9\?]{4}(/[IVXLCDM]+)?)\)')
re_extended_year_index = re.compile(r'\((TV episode|TV Series|TV mini-series|TV|Video|Video Game)? ?((?:[0-9\?]{4})(?:-[0-9\?]{4})?)(?:/([IVXLCDM]+)?)?\)')
re_remove_kind = re.compile(r'\((TV episode|TV Series|TV mini-series|TV|Video|Video Game)? ?')
# Match only the imdbIndex (for name strings).
re_index = re.compile(r'^\(([IVXLCDM]+)\)$')
# Match things inside parentheses.
re_parentheses = re.compile(r'(\(.*\))')
# Match the number of episodes.
re_episodes = re.compile('\s?\((\d+) episodes\)', re.I)
re_episode_info = re.compile(r'{\s*(.+?)?\s?(\([0-9\?]{4}-[0-9\?]{1,2}-[0-9\?]{1,2}\))?\s?(\(#[0-9]+\.[0-9]+\))?}')
# Common suffixes in surnames.
_sname_suffixes = ('de', 'la', 'der', 'den', 'del', 'y', 'da', 'van',
'e', 'von', 'the', 'di', 'du', 'el', 'al')
def canonicalName(name):
"""Return the given name in canonical "Surname, Name" format.
It assumes that name is in the 'Name Surname' format."""
# XXX: some statistics (as of 17 Apr 2008, over 2288622 names):
# - just a surname: 69476
# - single surname, single name: 2209656
# - composed surname, composed name: 9490
# - composed surname, single name: 67606
# (2: 59764, 3: 6862, 4: 728)
# - single surname, composed name: 242310
# (2: 229467, 3: 9901, 4: 2041, 5: 630)
# - Jr.: 8025
# Don't convert names already in the canonical format.
if name.find(', ') != -1: return name
if isinstance(name, unicode):
joiner = u'%s, %s'
sur_joiner = u'%s %s'
sur_space = u' %s'
space = u' '
else:
joiner = '%s, %s'
sur_joiner = '%s %s'
sur_space = ' %s'
space = ' '
sname = name.split(' ')
snl = len(sname)
if snl == 2:
# Just a name and a surname: how boring...
name = joiner % (sname[1], sname[0])
elif snl > 2:
lsname = [x.lower() for x in sname]
if snl == 3: _indexes = (0, snl-2)
else: _indexes = (0, snl-2, snl-3)
# Check for common surname prefixes at the beginning and near the end.
for index in _indexes:
if lsname[index] not in _sname_suffixes: continue
try:
# Build the surname.
surn = sur_joiner % (sname[index], sname[index+1])
del sname[index]
del sname[index]
try:
# Handle the "Jr." after the name.
if lsname[index+2].startswith('jr'):
surn += sur_space % sname[index]
del sname[index]
except (IndexError, ValueError):
pass
name = joiner % (surn, space.join(sname))
break
except ValueError:
continue
else:
name = joiner % (sname[-1], space.join(sname[:-1]))
return name
def normalizeName(name):
"""Return a name in the normal "Name Surname" format."""
if isinstance(name, unicode):
joiner = u'%s %s'
else:
joiner = '%s %s'
sname = name.split(', ')
if len(sname) == 2:
name = joiner % (sname[1], sname[0])
return name
def analyze_name(name, canonical=None):
"""Return a dictionary with the name and the optional imdbIndex
keys, from the given string.
If canonical is None (default), the name is stored in its own style.
If canonical is True, the name is converted to canonical style.
If canonical is False, the name is converted to normal format.
raise an IMDbParserError exception if the name is not valid.
"""
original_n = name
name = name.strip()
res = {}
imdbIndex = ''
opi = name.rfind('(')
cpi = name.rfind(')')
# Strip notes (but not if the name starts with a parenthesis).
if opi not in (-1, 0) and cpi > opi:
if re_index.match(name[opi:cpi+1]):
imdbIndex = name[opi+1:cpi]
name = name[:opi].rstrip()
else:
# XXX: for the birth and death dates case like " (1926-2004)"
name = re_parentheses.sub('', name).strip()
if not name:
raise IMDbParserError('invalid name: "%s"' % original_n)
if canonical is not None:
if canonical:
name = canonicalName(name)
else:
name = normalizeName(name)
res['name'] = name
if imdbIndex:
res['imdbIndex'] = imdbIndex
return res
def build_name(name_dict, canonical=None):
"""Given a dictionary that represents a "long" IMDb name,
return a string.
If canonical is None (default), the name is returned in the stored style.
If canonical is True, the name is converted to canonical style.
If canonical is False, the name is converted to normal format.
"""
name = name_dict.get('canonical name') or name_dict.get('name', '')
if not name: return ''
if canonical is not None:
if canonical:
name = canonicalName(name)
else:
name = normalizeName(name)
imdbIndex = name_dict.get('imdbIndex')
if imdbIndex:
name += ' (%s)' % imdbIndex
return name
# XXX: here only for backward compatibility. Find and remove any dependency.
_articles = linguistics.GENERIC_ARTICLES
_unicodeArticles = linguistics.toUnicode(_articles)
articlesDicts = linguistics.articlesDictsForLang(None)
spArticles = linguistics.spArticlesForLang(None)
def canonicalTitle(title, lang=None):
"""Return the title in the canonic format 'Movie Title, The';
beware that it doesn't handle long imdb titles, but only the
title portion, without year[/imdbIndex] or special markup.
The 'lang' argument can be used to specify the language of the title.
"""
isUnicode = isinstance(title, unicode)
articlesDicts = linguistics.articlesDictsForLang(lang)
try:
if title.split(', ')[-1].lower() in articlesDicts[isUnicode]:
return title
except IndexError:
pass
if isUnicode:
_format = u'%s, %s'
else:
_format = '%s, %s'
ltitle = title.lower()
spArticles = linguistics.spArticlesForLang(lang)
for article in spArticles[isUnicode]:
if ltitle.startswith(article):
lart = len(article)
title = _format % (title[lart:], title[:lart])
if article[-1] == ' ':
title = title[:-1]
break
## XXX: an attempt using a dictionary lookup.
##for artSeparator in (' ', "'", '-'):
## article = _articlesDict.get(ltitle.split(artSeparator)[0])
## if article is not None:
## lart = len(article)
## # check titles like "una", "I'm Mad" and "L'abbacchio".
## if title[lart:] == '' or (artSeparator != ' ' and
## title[lart:][1] != artSeparator): continue
## title = '%s, %s' % (title[lart:], title[:lart])
## if artSeparator == ' ': title = title[1:]
## break
return title
def normalizeTitle(title, lang=None):
"""Return the title in the normal "The Title" format;
beware that it doesn't handle long imdb titles, but only the
title portion, without year[/imdbIndex] or special markup.
The 'lang' argument can be used to specify the language of the title.
"""
isUnicode = isinstance(title, unicode)
stitle = title.split(', ')
articlesDicts = linguistics.articlesDictsForLang(lang)
if len(stitle) > 1 and stitle[-1].lower() in articlesDicts[isUnicode]:
sep = ' '
if stitle[-1][-1] in ("'", '-'):
sep = ''
if isUnicode:
_format = u'%s%s%s'
_joiner = u', '
else:
_format = '%s%s%s'
_joiner = ', '
title = _format % (stitle[-1], sep, _joiner.join(stitle[:-1]))
return title
def _split_series_episode(title):
"""Return the series and the episode titles; if this is not a
series' episode, the returned series title is empty.
This function recognize two different styles:
"The Series" An Episode (2005)
"The Series" (2004) {An Episode (2005) (#season.episode)}"""
series_title = ''
episode_or_year = ''
if title[-1:] == '}':
# Title of the episode, as in the plain text data files.
begin_eps = title.rfind('{')
if begin_eps == -1: return '', ''
series_title = title[:begin_eps].rstrip()
# episode_or_year is returned with the {...}
episode_or_year = title[begin_eps:].strip()
if episode_or_year[:12] == '{SUSPENDED}}': return '', ''
# XXX: works only with tv series; it's still unclear whether
# IMDb will support episodes for tv mini series and tv movies...
elif title[0:1] == '"':
second_quot = title[1:].find('"') + 2
if second_quot != 1: # a second " was found.
episode_or_year = title[second_quot:].lstrip()
first_char = episode_or_year[0:1]
if not first_char: return '', ''
if first_char != '(':
# There is not a (year) but the title of the episode;
# that means this is an episode title, as returned by
# the web server.
series_title = title[:second_quot]
##elif episode_or_year[-1:] == '}':
## # Title of the episode, as in the plain text data files.
## begin_eps = episode_or_year.find('{')
## if begin_eps == -1: return series_title, episode_or_year
## series_title = title[:second_quot+begin_eps].rstrip()
## # episode_or_year is returned with the {...}
## episode_or_year = episode_or_year[begin_eps:]
return series_title, episode_or_year
def is_series_episode(title):
"""Return True if 'title' is an series episode."""
title = title.strip()
if _split_series_episode(title)[0]: return 1
return 0
def analyze_title(title, canonical=None, canonicalSeries=None,
canonicalEpisode=None, _emptyString=u''):
"""Analyze the given title and return a dictionary with the
"stripped" title, the kind of the show ("movie", "tv series", etc.),
the year of production and the optional imdbIndex (a roman number
used to distinguish between movies with the same title and year).
If canonical is None (default), the title is stored in its own style.
If canonical is True, the title is converted to canonical style.
If canonical is False, the title is converted to normal format.
raise an IMDbParserError exception if the title is not valid.
"""
# XXX: introduce the 'lang' argument?
if canonical is not None:
canonicalSeries = canonicalEpisode = canonical
original_t = title
result = {}
title = title.strip()
year = _emptyString
kind = _emptyString
imdbIndex = _emptyString
series_title, episode_or_year = _split_series_episode(title)
if series_title:
# It's an episode of a series.
series_d = analyze_title(series_title, canonical=canonicalSeries)
oad = sen = ep_year = _emptyString
# Plain text data files format.
if episode_or_year[0:1] == '{' and episode_or_year[-1:] == '}':
match = re_episode_info.findall(episode_or_year)
if match:
# Episode title, original air date and #season.episode
episode_or_year, oad, sen = match[0]
episode_or_year = episode_or_year.strip()
if not oad:
# No year, but the title is something like (2005-04-12)
if episode_or_year and episode_or_year[0] == '(' and \
episode_or_year[-1:] == ')' and \
episode_or_year[1:2] != '#':
oad = episode_or_year
if oad[1:5] and oad[5:6] == '-':
try:
ep_year = int(oad[1:5])
except (TypeError, ValueError):
pass
if not oad and not sen and episode_or_year.startswith('(#'):
sen = episode_or_year
elif episode_or_year.startswith('Episode dated'):
oad = episode_or_year[14:]
if oad[-4:].isdigit():
try:
ep_year = int(oad[-4:])
except (TypeError, ValueError):
pass
episode_d = analyze_title(episode_or_year, canonical=canonicalEpisode)
episode_d['kind'] = u'episode'
episode_d['episode of'] = series_d
if oad:
episode_d['original air date'] = oad[1:-1]
if ep_year and episode_d.get('year') is None:
episode_d['year'] = ep_year
if sen and sen[2:-1].find('.') != -1:
seas, epn = sen[2:-1].split('.')
if seas:
# Set season and episode.
try: seas = int(seas)
except: pass
try: epn = int(epn)
except: pass
episode_d['season'] = seas
if epn:
episode_d['episode'] = epn
return episode_d
# First of all, search for the kind of show.
# XXX: Number of entries at 17 Apr 2008:
# movie: 379,871
# episode: 483,832
# tv movie: 61,119
# tv series: 44,795
# video movie: 57,915
# tv mini series: 5,497
# video game: 5,490
# More up-to-date statistics: http://us.imdb.com/database_statistics
if title.endswith('(TV)'):
kind = u'tv movie'
title = title[:-4].rstrip()
elif title.endswith('(V)'):
kind = u'video movie'
title = title[:-3].rstrip()
elif title.endswith('(video)'):
kind = u'video movie'
title = title[:-7].rstrip()
elif title.endswith('(mini)'):
kind = u'tv mini series'
title = title[:-6].rstrip()
elif title.endswith('(VG)'):
kind = u'video game'
title = title[:-4].rstrip()
# Search for the year and the optional imdbIndex (a roman number).
yi = re_year_index.findall(title)
if not yi:
yi = re_extended_year_index.findall(title)
if yi:
yk, yiy, yii = yi[-1]
yi = [(yiy, yii)]
if yk == 'TV episode':
kind = u'episode'
elif yk == 'TV':
kind = u'tv movie'
elif yk == 'TV Series':
kind = u'tv series'
elif yk == 'Video':
kind = u'video movie'
elif yk == 'TV mini-series':
kind = u'tv mini series'
elif yk == 'Video Game':
kind = u'video game'
title = re_remove_kind.sub('(', title)
if yi:
last_yi = yi[-1]
year = last_yi[0]
if last_yi[1]:
imdbIndex = last_yi[1][1:]
year = year[:-len(imdbIndex)-1]
i = title.rfind('(%s)' % last_yi[0])
if i != -1:
title = title[:i-1].rstrip()
# This is a tv (mini) series: strip the '"' at the begin and at the end.
# XXX: strip('"') is not used for compatibility with Python 2.0.
if title and title[0] == title[-1] == '"':
if not kind:
kind = u'tv series'
title = title[1:-1].strip()
elif title.endswith('(TV series)'):
kind = u'tv series'
title = title[:-11].rstrip()
if not title:
raise IMDbParserError('invalid title: "%s"' % original_t)
if canonical is not None:
if canonical:
title = canonicalTitle(title)
else:
title = normalizeTitle(title)
# 'kind' is one in ('movie', 'episode', 'tv series', 'tv mini series',
# 'tv movie', 'video movie', 'video game')
result['title'] = title
result['kind'] = kind or u'movie'
if year and year != '????':
if '-' in year:
result['series years'] = year
year = year[:4]
try:
result['year'] = int(year)
except (TypeError, ValueError):
pass
if imdbIndex:
result['imdbIndex'] = imdbIndex
if isinstance(_emptyString, str):
result['kind'] = str(kind or 'movie')
return result
_web_format = '%d %B %Y'
_ptdf_format = '(%Y-%m-%d)'
def _convertTime(title, fromPTDFtoWEB=1, _emptyString=u''):
"""Convert a time expressed in the pain text data files, to
the 'Episode dated ...' format used on the web site; if
fromPTDFtoWEB is false, the inverted conversion is applied."""
try:
if fromPTDFtoWEB:
from_format = _ptdf_format
to_format = _web_format
else:
from_format = u'Episode dated %s' % _web_format
to_format = _ptdf_format
t = strptime(title, from_format)
title = strftime(to_format, t)
if fromPTDFtoWEB:
if title[0] == '0': title = title[1:]
title = u'Episode dated %s' % title
except ValueError:
pass
if isinstance(_emptyString, str):
try:
title = str(title)
except UnicodeDecodeError:
pass
return title
def build_title(title_dict, canonical=None, canonicalSeries=None,
canonicalEpisode=None, ptdf=0, lang=None, _doYear=1,
_emptyString=u''):
"""Given a dictionary that represents a "long" IMDb title,
return a string.
If canonical is None (default), the title is returned in the stored style.
If canonical is True, the title is converted to canonical style.
If canonical is False, the title is converted to normal format.
lang can be used to specify the language of the title.
If ptdf is true, the plain text data files format is used.
"""
if canonical is not None:
canonicalSeries = canonical
pre_title = _emptyString
kind = title_dict.get('kind')
episode_of = title_dict.get('episode of')
if kind == 'episode' and episode_of is not None:
# Works with both Movie instances and plain dictionaries.
doYear = 0
if ptdf:
doYear = 1
pre_title = build_title(episode_of, canonical=canonicalSeries,
ptdf=0, _doYear=doYear,
_emptyString=_emptyString)
ep_dict = {'title': title_dict.get('title', ''),
'imdbIndex': title_dict.get('imdbIndex')}
ep_title = ep_dict['title']
if not ptdf:
doYear = 1
ep_dict['year'] = title_dict.get('year', '????')
if ep_title[0:1] == '(' and ep_title[-1:] == ')' and \
ep_title[1:5].isdigit():
ep_dict['title'] = _convertTime(ep_title, fromPTDFtoWEB=1,
_emptyString=_emptyString)
else:
doYear = 0
if ep_title.startswith('Episode dated'):
ep_dict['title'] = _convertTime(ep_title, fromPTDFtoWEB=0,
_emptyString=_emptyString)
episode_title = build_title(ep_dict,
canonical=canonicalEpisode, ptdf=ptdf,
_doYear=doYear, _emptyString=_emptyString)
if ptdf:
oad = title_dict.get('original air date', _emptyString)
if len(oad) == 10 and oad[4] == '-' and oad[7] == '-' and \
episode_title.find(oad) == -1:
episode_title += ' (%s)' % oad
seas = title_dict.get('season')
if seas is not None:
episode_title += ' (#%s' % seas
episode = title_dict.get('episode')
if episode is not None:
episode_title += '.%s' % episode
episode_title += ')'
episode_title = '{%s}' % episode_title
return '%s %s' % (pre_title, episode_title)
title = title_dict.get('title', '')
if not title: return _emptyString
if canonical is not None:
if canonical:
title = canonicalTitle(title, lang=lang)
else:
title = normalizeTitle(title, lang=lang)
if pre_title:
title = '%s %s' % (pre_title, title)
if kind in (u'tv series', u'tv mini series'):
title = '"%s"' % title
if _doYear:
imdbIndex = title_dict.get('imdbIndex')
year = title_dict.get('year') or u'????'
if isinstance(_emptyString, str):
year = str(year)
title += ' (%s' % year
if imdbIndex:
title += '/%s' % imdbIndex
title += ')'
if kind:
if kind == 'tv movie':
title += ' (TV)'
elif kind == 'video movie':
title += ' (V)'
elif kind == 'tv mini series':
title += ' (mini)'
elif kind == 'video game':
title += ' (VG)'
return title
def split_company_name_notes(name):
"""Return two strings, the first representing the company name,
and the other representing the (optional) notes."""
name = name.strip()
notes = u''
if name.endswith(')'):
fpidx = name.find('(')
if fpidx != -1:
notes = name[fpidx:]
name = name[:fpidx].rstrip()
return name, notes
def analyze_company_name(name, stripNotes=False):
"""Return a dictionary with the name and the optional 'country'
keys, from the given string.
If stripNotes is true, tries to not consider optional notes.
raise an IMDbParserError exception if the name is not valid.
"""
if stripNotes:
name = split_company_name_notes(name)[0]
o_name = name
name = name.strip()
country = None
if name.endswith(']'):
idx = name.rfind('[')
if idx != -1:
country = name[idx:]
name = name[:idx].rstrip()
if not name:
raise IMDbParserError('invalid name: "%s"' % o_name)
result = {'name': name}
if country:
result['country'] = country
return result
def build_company_name(name_dict, _emptyString=u''):
"""Given a dictionary that represents a "long" IMDb company name,
return a string.
"""
name = name_dict.get('name')
if not name:
return _emptyString
country = name_dict.get('country')
if country is not None:
name += ' %s' % country
return name
class _LastC:
"""Size matters."""
def __cmp__(self, other):
if isinstance(other, self.__class__): return 0
return 1
_last = _LastC()
def cmpMovies(m1, m2):
"""Compare two movies by year, in reverse order; the imdbIndex is checked
for movies with the same year of production and title."""
# Sort tv series' episodes.
m1e = m1.get('episode of')
m2e = m2.get('episode of')
if m1e is not None and m2e is not None:
cmp_series = cmpMovies(m1e, m2e)
if cmp_series != 0:
return cmp_series
m1s = m1.get('season')
m2s = m2.get('season')
if m1s is not None and m2s is not None:
if m1s < m2s:
return 1
elif m1s > m2s:
return -1
m1p = m1.get('episode')
m2p = m2.get('episode')
if m1p < m2p:
return 1
elif m1p > m2p:
return -1
try:
if m1e is None: m1y = int(m1.get('year', 0))
else: m1y = int(m1e.get('year', 0))
except ValueError:
m1y = 0
try:
if m2e is None: m2y = int(m2.get('year', 0))
else: m2y = int(m2e.get('year', 0))
except ValueError:
m2y = 0
if m1y > m2y: return -1
if m1y < m2y: return 1
# Ok, these movies have the same production year...
#m1t = m1.get('canonical title', _last)
#m2t = m2.get('canonical title', _last)
# It should works also with normal dictionaries (returned from searches).
#if m1t is _last and m2t is _last:
m1t = m1.get('title', _last)
m2t = m2.get('title', _last)
if m1t < m2t: return -1
if m1t > m2t: return 1
# Ok, these movies have the same title...
m1i = m1.get('imdbIndex', _last)
m2i = m2.get('imdbIndex', _last)
if m1i > m2i: return -1
if m1i < m2i: return 1
m1id = getattr(m1, 'movieID', None)
# Introduce this check even for other comparisons functions?
# XXX: is it safe to check without knowning the data access system?
# probably not a great idea. Check for 'kind', instead?
if m1id is not None:
m2id = getattr(m2, 'movieID', None)
if m1id > m2id: return -1
elif m1id < m2id: return 1
return 0
def cmpPeople(p1, p2):
"""Compare two people by billingPos, name and imdbIndex."""
p1b = getattr(p1, 'billingPos', None) or _last
p2b = getattr(p2, 'billingPos', None) or _last
if p1b > p2b: return 1
if p1b < p2b: return -1
p1n = p1.get('canonical name', _last)
p2n = p2.get('canonical name', _last)
if p1n is _last and p2n is _last:
p1n = p1.get('name', _last)
p2n = p2.get('name', _last)
if p1n > p2n: return 1
if p1n < p2n: return -1
p1i = p1.get('imdbIndex', _last)
p2i = p2.get('imdbIndex', _last)
if p1i > p2i: return 1
if p1i < p2i: return -1
return 0
def cmpCompanies(p1, p2):
"""Compare two companies."""
p1n = p1.get('long imdb name', _last)
p2n = p2.get('long imdb name', _last)
if p1n is _last and p2n is _last:
p1n = p1.get('name', _last)
p2n = p2.get('name', _last)
if p1n > p2n: return 1
if p1n < p2n: return -1
p1i = p1.get('country', _last)
p2i = p2.get('country', _last)
if p1i > p2i: return 1
if p1i < p2i: return -1
return 0
# References to titles, names and characters.
# XXX: find better regexp!
re_titleRef = re.compile(r'_(.+?(?: \([0-9\?]{4}(?:/[IVXLCDM]+)?\))?(?: \(mini\)| \(TV\)| \(V\)| \(VG\))?)_ \(qv\)')
# FIXME: doesn't match persons with ' in the name.
re_nameRef = re.compile(r"'([^']+?)' \(qv\)")
# XXX: good choice? Are there characters with # in the name?
re_characterRef = re.compile(r"#([^']+?)# \(qv\)")
# Functions used to filter the text strings.
def modNull(s, titlesRefs, namesRefs, charactersRefs):
"""Do nothing."""
return s
def modClearTitleRefs(s, titlesRefs, namesRefs, charactersRefs):
"""Remove titles references."""
return re_titleRef.sub(r'\1', s)
def modClearNameRefs(s, titlesRefs, namesRefs, charactersRefs):
"""Remove names references."""
return re_nameRef.sub(r'\1', s)
def modClearCharacterRefs(s, titlesRefs, namesRefs, charactersRefs):
"""Remove characters references"""
return re_characterRef.sub(r'\1', s)
def modClearRefs(s, titlesRefs, namesRefs, charactersRefs):
"""Remove titles, names and characters references."""
s = modClearTitleRefs(s, {}, {}, {})
s = modClearCharacterRefs(s, {}, {}, {})
return modClearNameRefs(s, {}, {}, {})
def modifyStrings(o, modFunct, titlesRefs, namesRefs, charactersRefs):
"""Modify a string (or string values in a dictionary or strings
in a list), using the provided modFunct function and titlesRefs
namesRefs and charactersRefs references dictionaries."""
# Notice that it doesn't go any deeper than the first two levels in a list.
if isinstance(o, (unicode, str)):
return modFunct(o, titlesRefs, namesRefs, charactersRefs)
elif isinstance(o, (list, tuple, dict)):
_stillorig = 1
if isinstance(o, (list, tuple)): keys = xrange(len(o))
else: keys = o.keys()
for i in keys:
v = o[i]
if isinstance(v, (unicode, str)):
if _stillorig:
o = copy(o)
_stillorig = 0
o[i] = modFunct(v, titlesRefs, namesRefs, charactersRefs)
elif isinstance(v, (list, tuple)):
modifyStrings(o[i], modFunct, titlesRefs, namesRefs,
charactersRefs)
return o
def date_and_notes(s):
"""Parse (birth|death) date and notes; returns a tuple in the
form (date, notes)."""
s = s.strip()
if not s: return (u'', u'')
notes = u''
if s[0].isdigit() or s.split()[0].lower() in ('c.', 'january', 'february',
'march', 'april', 'may', 'june',
'july', 'august', 'september',
'october', 'november',
'december', 'ca.', 'circa',
'????,'):
i = s.find(',')
if i != -1:
notes = s[i+1:].strip()
s = s[:i]
else:
notes = s
s = u''
if s == '????': s = u''
return s, notes
class RolesList(list):
"""A list of Person or Character instances, used for the currentRole
property."""
def __unicode__(self):
return u' / '.join([unicode(x) for x in self])
def __str__(self):
# FIXME: does it make sense at all? Return a unicode doesn't
# seem right, in __str__.
return u' / '.join([unicode(x).encode('utf8') for x in self])
# Replace & with &, but only if it's not already part of a charref.
#_re_amp = re.compile(r'(&)(?!\w+;)', re.I)
#_re_amp = re.compile(r'(?<=\W)&(?=[^a-zA-Z0-9_#])')
_re_amp = re.compile(r'&(?![^a-zA-Z0-9_#]{1,5};)')
def escape4xml(value):
"""Escape some chars that can't be present in a XML value."""
if isinstance(value, int):
value = str(value)
value = _re_amp.sub('&', value)
value = value.replace('"', '"').replace("'", ''')
value = value.replace('<', '<').replace('>', '>')
if isinstance(value, unicode):
value = value.encode('ascii', 'xmlcharrefreplace')
return value
def _refsToReplace(value, modFunct, titlesRefs, namesRefs, charactersRefs):
"""Return three lists - for movie titles, persons and characters names -
with two items tuples: the first item is the reference once escaped
by the user-provided modFunct function, the second is the same
reference un-escaped."""
mRefs = []
for refRe, refTemplate in [(re_titleRef, u'_%s_ (qv)'),
(re_nameRef, u"'%s' (qv)"),
(re_characterRef, u'#%s# (qv)')]:
theseRefs = []
for theRef in refRe.findall(value):
# refTemplate % theRef values don't change for a single
# _Container instance, so this is a good candidate for a
# cache or something - even if it's so rarely used that...
# Moreover, it can grow - ia.update(...) - and change if
# modFunct is modified.
goodValue = modFunct(refTemplate % theRef, titlesRefs, namesRefs,
charactersRefs)
# Prevents problems with crap in plain text data files.
# We should probably exclude invalid chars and string that
# are too long in the re_*Ref expressions.
if '_' in goodValue or len(goodValue) > 128:
continue
toReplace = escape4xml(goodValue)
# Only the 'value' portion is replaced.
replaceWith = goodValue.replace(theRef, escape4xml(theRef))
theseRefs.append((toReplace, replaceWith))
mRefs.append(theseRefs)
return mRefs
def _handleTextNotes(s):
"""Split text::notes strings."""
ssplit = s.split('::', 1)
if len(ssplit) == 1:
return s
return u'%s<notes>%s</notes>' % (ssplit[0], ssplit[1])
def _normalizeValue(value, withRefs=False, modFunct=None, titlesRefs=None,
namesRefs=None, charactersRefs=None):
"""Replace some chars that can't be present in a XML text."""
# XXX: use s.encode(encoding, 'xmlcharrefreplace') ? Probably not
# a great idea: after all, returning a unicode is safe.
if isinstance(value, (unicode, str)):
if not withRefs:
value = _handleTextNotes(escape4xml(value))
else:
# Replace references that were accidentally escaped.
replaceLists = _refsToReplace(value, modFunct, titlesRefs,
namesRefs, charactersRefs)
value = modFunct(value, titlesRefs or {}, namesRefs or {},
charactersRefs or {})
value = _handleTextNotes(escape4xml(value))
for replaceList in replaceLists:
for toReplace, replaceWith in replaceList:
value = value.replace(toReplace, replaceWith)
else:
value = unicode(value)
return value
def _tag4TON(ton, addAccessSystem=False, _containerOnly=False):
"""Build a tag for the given _Container instance;
both open and close tags are returned."""
tag = ton.__class__.__name__.lower()
what = 'name'
if tag == 'movie':
value = ton.get('long imdb title') or ton.get('title', '')
what = 'title'
else:
value = ton.get('long imdb name') or ton.get('name', '')
value = _normalizeValue(value)
extras = u''
crl = ton.currentRole
if crl:
if not isinstance(crl, list):
crl = [crl]
for cr in crl:
crTag = cr.__class__.__name__.lower()
crValue = cr['long imdb name']
crValue = _normalizeValue(crValue)
crID = cr.getID()
if crID is not None:
extras += u'<current-role><%s id="%s">' \
u'<name>%s</name></%s>' % (crTag, crID,
crValue, crTag)
else:
extras += u'<current-role><%s><name>%s</name></%s>' % \
(crTag, crValue, crTag)
if cr.notes:
extras += u'<notes>%s</notes>' % _normalizeValue(cr.notes)
extras += u'</current-role>'
theID = ton.getID()
if theID is not None:
beginTag = u'<%s id="%s"' % (tag, theID)
if addAccessSystem and ton.accessSystem:
beginTag += ' access-system="%s"' % ton.accessSystem
if not _containerOnly:
beginTag += u'><%s>%s</%s>' % (what, value, what)
else:
beginTag += u'>'
else:
if not _containerOnly:
beginTag = u'<%s><%s>%s</%s>' % (tag, what, value, what)
else:
beginTag = u'<%s>' % tag
beginTag += extras
if ton.notes:
beginTag += u'<notes>%s</notes>' % _normalizeValue(ton.notes)
return (beginTag, u'</%s>' % tag)
TAGS_TO_MODIFY = {
'movie.parents-guide': ('item', True),
'movie.number-of-votes': ('item', True),
'movie.soundtrack.item': ('item', True),
'movie.quotes': ('quote', False),
'movie.quotes.quote': ('line', False),
'movie.demographic': ('item', True),
'movie.episodes': ('season', True),
'movie.episodes.season': ('episode', True),
'person.merchandising-links': ('item', True),
'person.genres': ('item', True),
'person.quotes': ('quote', False),
'person.keywords': ('item', True),
'character.quotes': ('item', True),
'character.quotes.item': ('quote', False),
'character.quotes.item.quote': ('line', False)
}
_allchars = string.maketrans('', '')
_keepchars = _allchars.translate(_allchars, string.ascii_lowercase + '-' +
string.digits)
def _tagAttr(key, fullpath):
"""Return a tuple with a tag name and a (possibly empty) attribute,
applying the conversions specified in TAGS_TO_MODIFY and checking
that the tag is safe for a XML document."""
attrs = {}
_escapedKey = escape4xml(key)
if fullpath in TAGS_TO_MODIFY:
tagName, useTitle = TAGS_TO_MODIFY[fullpath]
if useTitle:
attrs['key'] = _escapedKey
elif not isinstance(key, unicode):
if isinstance(key, str):
tagName = unicode(key, 'ascii', 'ignore')
else:
strType = str(type(key)).replace("<type '", "").replace("'>", "")
attrs['keytype'] = strType
tagName = unicode(key)
else:
tagName = key
if isinstance(key, int):
attrs['keytype'] = 'int'
origTagName = tagName
tagName = tagName.lower().replace(' ', '-')
tagName = str(tagName).translate(_allchars, _keepchars)
if origTagName != tagName:
if 'key' not in attrs:
attrs['key'] = _escapedKey
if (not tagName) or tagName[0].isdigit() or tagName[0] == '-':
# This is a fail-safe: we should never be here, since unpredictable
# keys must be listed in TAGS_TO_MODIFY.
# This will proably break the DTD/schema, but at least it will
# produce a valid XML.
tagName = 'item'
_utils_logger.error('invalid tag: %s [%s]' % (_escapedKey, fullpath))
attrs['key'] = _escapedKey
return tagName, u' '.join([u'%s="%s"' % i for i in attrs.items()])
def _seq2xml(seq, _l=None, withRefs=False, modFunct=None,
titlesRefs=None, namesRefs=None, charactersRefs=None,
_topLevel=True, key2infoset=None, fullpath=''):
"""Convert a sequence or a dictionary to a list of XML
unicode strings."""
if _l is None:
_l = []
if isinstance(seq, dict):
for key in seq:
value = seq[key]
if isinstance(key, _Container):
# Here we're assuming that a _Container is never a top-level
# key (otherwise we should handle key2infoset).
openTag, closeTag = _tag4TON(key)
# So that fullpath will contains something meaningful.
tagName = key.__class__.__name__.lower()
else:
tagName, attrs = _tagAttr(key, fullpath)
openTag = u'<%s' % tagName
if attrs:
openTag += ' %s' % attrs
if _topLevel and key2infoset and key in key2infoset:
openTag += u' infoset="%s"' % key2infoset[key]
if isinstance(value, int):
openTag += ' type="int"'
elif isinstance(value, float):
openTag += ' type="float"'
openTag += u'>'
closeTag = u'</%s>' % tagName
_l.append(openTag)
_seq2xml(value, _l, withRefs, modFunct, titlesRefs,
namesRefs, charactersRefs, _topLevel=False,
fullpath='%s.%s' % (fullpath, tagName))
_l.append(closeTag)
elif isinstance(seq, (list, tuple)):
tagName, attrs = _tagAttr('item', fullpath)
beginTag = u'<%s' % tagName
if attrs:
beginTag += u' %s' % attrs
#beginTag += u'>'
closeTag = u'</%s>' % tagName
for item in seq:
if isinstance(item, _Container):
_seq2xml(item, _l, withRefs, modFunct, titlesRefs,
namesRefs, charactersRefs, _topLevel=False,
fullpath='%s.%s' % (fullpath,
item.__class__.__name__.lower()))
else:
openTag = beginTag
if isinstance(item, int):
openTag += ' type="int"'
elif isinstance(item, float):
openTag += ' type="float"'
openTag += u'>'
_l.append(openTag)
_seq2xml(item, _l, withRefs, modFunct, titlesRefs,
namesRefs, charactersRefs, _topLevel=False,
fullpath='%s.%s' % (fullpath, tagName))
_l.append(closeTag)
else:
if isinstance(seq, _Container):
_l.extend(_tag4TON(seq))
else:
# Text, ints, floats and the like.
_l.append(_normalizeValue(seq, withRefs=withRefs,
modFunct=modFunct,
titlesRefs=titlesRefs,
namesRefs=namesRefs,
charactersRefs=charactersRefs))
return _l
_xmlHead = u"""<?xml version="1.0"?>
<!DOCTYPE %s SYSTEM "http://imdbpy.sf.net/dtd/imdbpy{VERSION}.dtd">
"""
_xmlHead = _xmlHead.replace('{VERSION}',
VERSION.replace('.', '').split('dev')[0][:2])
class _Container(object):
"""Base class for Movie, Person, Character and Company classes."""
# The default sets of information retrieved.
default_info = ()
# Aliases for some not-so-intuitive keys.
keys_alias = {}
# List of keys to modify.
keys_tomodify_list = ()
# Function used to compare two instances of this class.
cmpFunct = None
# Regular expression used to build the 'full-size (headshot|cover url)'.
_re_fullsizeURL = re.compile(r'\._V1\._SX(\d+)_SY(\d+)_')
def __init__(self, myID=None, data=None, notes=u'',
currentRole=u'', roleID=None, roleIsPerson=False,
accessSystem=None, titlesRefs=None, namesRefs=None,
charactersRefs=None, modFunct=None, *args, **kwds):
"""Initialize a Movie, Person, Character or Company object.
*myID* -- your personal identifier for this object.
*data* -- a dictionary used to initialize the object.
*notes* -- notes for the person referred in the currentRole
attribute; e.g.: '(voice)' or the alias used in the
movie credits.
*accessSystem* -- a string representing the data access system used.
*currentRole* -- a Character instance representing the current role
or duty of a person in this movie, or a Person
object representing the actor/actress who played
a given character in a Movie. If a string is
passed, an object is automatically build.
*roleID* -- if available, the characterID/personID of the currentRole
object.
*roleIsPerson* -- when False (default) the currentRole is assumed
to be a Character object, otherwise a Person.
*titlesRefs* -- a dictionary with references to movies.
*namesRefs* -- a dictionary with references to persons.
*charactersRefs* -- a dictionary with references to characters.
*modFunct* -- function called returning text fields.
"""
self.reset()
self.accessSystem = accessSystem
self.myID = myID
if data is None: data = {}
self.set_data(data, override=1)
self.notes = notes
if titlesRefs is None: titlesRefs = {}
self.update_titlesRefs(titlesRefs)
if namesRefs is None: namesRefs = {}
self.update_namesRefs(namesRefs)
if charactersRefs is None: charactersRefs = {}
self.update_charactersRefs(charactersRefs)
self.set_mod_funct(modFunct)
self.keys_tomodify = {}
for item in self.keys_tomodify_list:
self.keys_tomodify[item] = None
self._roleIsPerson = roleIsPerson
if not roleIsPerson:
from imdb.Character import Character
self._roleClass = Character
else:
from imdb.Person import Person
self._roleClass = Person
self.currentRole = currentRole
if roleID:
self.roleID = roleID
self._init(*args, **kwds)
def _get_roleID(self):
"""Return the characterID or personID of the currentRole object."""
if not self.__role:
return None
if isinstance(self.__role, list):
return [x.getID() for x in self.__role]
return self.currentRole.getID()
def _set_roleID(self, roleID):
"""Set the characterID or personID of the currentRole object."""
if not self.__role:
# XXX: needed? Just ignore it? It's probably safer to
# ignore it, to prevent some bugs in the parsers.
#raise IMDbError,"Can't set ID of an empty Character/Person object."
pass
if not self._roleIsPerson:
if not isinstance(roleID, (list, tuple)):
self.currentRole.characterID = roleID
else:
for index, item in enumerate(roleID):
self.__role[index].characterID = item
else:
if not isinstance(roleID, (list, tuple)):
self.currentRole.personID = roleID
else:
for index, item in enumerate(roleID):
self.__role[index].personID = item
roleID = property(_get_roleID, _set_roleID,
doc="the characterID or personID of the currentRole object.")
def _get_currentRole(self):
"""Return a Character or Person instance."""
if self.__role:
return self.__role
return self._roleClass(name=u'', accessSystem=self.accessSystem,
modFunct=self.modFunct)
def _set_currentRole(self, role):
"""Set self.currentRole to a Character or Person instance."""
if isinstance(role, (unicode, str)):
if not role:
self.__role = None
else:
self.__role = self._roleClass(name=role, modFunct=self.modFunct,
accessSystem=self.accessSystem)
elif isinstance(role, (list, tuple)):
self.__role = RolesList()
for item in role:
if isinstance(item, (unicode, str)):
self.__role.append(self._roleClass(name=item,
accessSystem=self.accessSystem,
modFunct=self.modFunct))
else:
self.__role.append(item)
if not self.__role:
self.__role = None
else:
self.__role = role
currentRole = property(_get_currentRole, _set_currentRole,
doc="The role of a Person in a Movie" + \
" or the interpreter of a Character in a Movie.")
def _init(self, **kwds): pass
def reset(self):
"""Reset the object."""
self.data = {}
self.myID = None
self.notes = u''
self.titlesRefs = {}
self.namesRefs = {}
self.charactersRefs = {}
self.modFunct = modClearRefs
self.current_info = []
self.infoset2keys = {}
self.key2infoset = {}
self.__role = None
self._reset()
def _reset(self): pass
def clear(self):
"""Reset the dictionary."""
self.data.clear()
self.notes = u''
self.titlesRefs = {}
self.namesRefs = {}
self.charactersRefs = {}
self.current_info = []
self.infoset2keys = {}
self.key2infoset = {}
self.__role = None
self._clear()
def _clear(self): pass
def get_current_info(self):
"""Return the current set of information retrieved."""
return self.current_info
def update_infoset_map(self, infoset, keys, mainInfoset):
"""Update the mappings between infoset and keys."""
if keys is None:
keys = []
if mainInfoset is not None:
theIS = mainInfoset
else:
theIS = infoset
self.infoset2keys[theIS] = keys
for key in keys:
self.key2infoset[key] = theIS
def set_current_info(self, ci):
"""Set the current set of information retrieved."""
# XXX:Remove? It's never used and there's no way to update infoset2keys.
self.current_info = ci
def add_to_current_info(self, val, keys=None, mainInfoset=None):
"""Add a set of information to the current list."""
if val not in self.current_info:
self.current_info.append(val)
self.update_infoset_map(val, keys, mainInfoset)
def has_current_info(self, val):
"""Return true if the given set of information is in the list."""
return val in self.current_info
def set_mod_funct(self, modFunct):
"""Set the fuction used to modify the strings."""
if modFunct is None: modFunct = modClearRefs
self.modFunct = modFunct
def update_titlesRefs(self, titlesRefs):
"""Update the dictionary with the references to movies."""
self.titlesRefs.update(titlesRefs)
def get_titlesRefs(self):
"""Return the dictionary with the references to movies."""
return self.titlesRefs
def update_namesRefs(self, namesRefs):
"""Update the dictionary with the references to names."""
self.namesRefs.update(namesRefs)
def get_namesRefs(self):
"""Return the dictionary with the references to names."""
return self.namesRefs
def update_charactersRefs(self, charactersRefs):
"""Update the dictionary with the references to characters."""
self.charactersRefs.update(charactersRefs)
def get_charactersRefs(self):
"""Return the dictionary with the references to characters."""
return self.charactersRefs
def set_data(self, data, override=0):
"""Set the movie data to the given dictionary; if 'override' is
set, the previous data is removed, otherwise the two dictionary
are merged.
"""
if not override:
self.data.update(data)
else:
self.data = data
def getID(self):
"""Return movieID, personID, characterID or companyID."""
raise NotImplementedError('override this method')
def __cmp__(self, other):
"""Compare two Movie, Person, Character or Company objects."""
# XXX: raise an exception?
if self.cmpFunct is None: return -1
if not isinstance(other, self.__class__): return -1
return self.cmpFunct(other)
def __hash__(self):
"""Hash for this object."""
# XXX: does it always work correctly?
theID = self.getID()
if theID is not None and self.accessSystem not in ('UNKNOWN', None):
# Handle 'http' and 'mobile' as they are the same access system.
acs = self.accessSystem
if acs in ('mobile', 'httpThin'):
acs = 'http'
# There must be some indication of the kind of the object, too.
s4h = '%s:%s[%s]' % (self.__class__.__name__, theID, acs)
else:
s4h = repr(self)
return hash(s4h)
def isSame(self, other):
"""Return True if the two represent the same object."""
if not isinstance(other, self.__class__): return 0
if hash(self) == hash(other): return 1
return 0
def __len__(self):
"""Number of items in the data dictionary."""
return len(self.data)
def getAsXML(self, key, _with_add_keys=True):
"""Return a XML representation of the specified key, or None
if empty. If _with_add_keys is False, dinamically generated
keys are excluded."""
# Prevent modifyStrings in __getitem__ to be called; if needed,
# it will be called by the _normalizeValue function.
origModFunct = self.modFunct
self.modFunct = modNull
# XXX: not totally sure it's a good idea, but could prevent
# problems (i.e.: the returned string always contains
# a DTD valid tag, and not something that can be only in
# the keys_alias map).
key = self.keys_alias.get(key, key)
if (not _with_add_keys) and (key in self._additional_keys()):
self.modFunct = origModFunct
return None
try:
withRefs = False
if key in self.keys_tomodify and \
origModFunct not in (None, modNull):
withRefs = True
value = self.get(key)
if value is None:
return None
tag = self.__class__.__name__.lower()
return u''.join(_seq2xml({key: value}, withRefs=withRefs,
modFunct=origModFunct,
titlesRefs=self.titlesRefs,
namesRefs=self.namesRefs,
charactersRefs=self.charactersRefs,
key2infoset=self.key2infoset,
fullpath=tag))
finally:
self.modFunct = origModFunct
def asXML(self, _with_add_keys=True):
"""Return a XML representation of the whole object.
If _with_add_keys is False, dinamically generated keys are excluded."""
beginTag, endTag = _tag4TON(self, addAccessSystem=True,
_containerOnly=True)
resList = [beginTag]
for key in self.keys():
value = self.getAsXML(key, _with_add_keys=_with_add_keys)
if not value:
continue
resList.append(value)
resList.append(endTag)
head = _xmlHead % self.__class__.__name__.lower()
return head + u''.join(resList)
def _getitem(self, key):
"""Handle special keys."""
return None
def __getitem__(self, key):
"""Return the value for a given key, checking key aliases;
a KeyError exception is raised if the key is not found.
"""
value = self._getitem(key)
if value is not None: return value
# Handle key aliases.
key = self.keys_alias.get(key, key)
rawData = self.data[key]
if key in self.keys_tomodify and \
self.modFunct not in (None, modNull):
try:
return modifyStrings(rawData, self.modFunct, self.titlesRefs,
self.namesRefs, self.charactersRefs)
except RuntimeError, e:
# Symbian/python 2.2 has a poor regexp implementation.
import warnings
warnings.warn('RuntimeError in '
"imdb.utils._Container.__getitem__; if it's not "
"a recursion limit exceeded and we're not running "
"in a Symbian environment, it's a bug:\n%s" % e)
return rawData
def __setitem__(self, key, item):
"""Directly store the item with the given key."""
self.data[key] = item
def __delitem__(self, key):
"""Remove the given section or key."""
# XXX: how to remove an item of a section?
del self.data[key]
def _additional_keys(self):
"""Valid keys to append to the data.keys() list."""
return []
def keys(self):
"""Return a list of valid keys."""
return self.data.keys() + self._additional_keys()
def items(self):
"""Return the items in the dictionary."""
return [(k, self.get(k)) for k in self.keys()]
# XXX: is this enough?
def iteritems(self): return self.data.iteritems()
def iterkeys(self): return self.data.iterkeys()
def itervalues(self): return self.data.itervalues()
def values(self):
"""Return the values in the dictionary."""
return [self.get(k) for k in self.keys()]
def has_key(self, key):
"""Return true if a given section is defined."""
try:
self.__getitem__(key)
except KeyError:
return 0
return 1
# XXX: really useful???
# consider also that this will confuse people who meant to
# call ia.update(movieObject, 'data set') instead.
def update(self, dict):
self.data.update(dict)
def get(self, key, failobj=None):
"""Return the given section, or default if it's not found."""
try:
return self.__getitem__(key)
except KeyError:
return failobj
def setdefault(self, key, failobj=None):
if not self.has_key(key):
self[key] = failobj
return self[key]
def pop(self, key, *args):
return self.data.pop(key, *args)
def popitem(self):
return self.data.popitem()
def __repr__(self):
"""String representation of an object."""
raise NotImplementedError('override this method')
def __str__(self):
"""Movie title or person name."""
raise NotImplementedError('override this method')
def __contains__(self, key):
raise NotImplementedError('override this method')
def append_item(self, key, item):
"""The item is appended to the list identified by the given key."""
self.data.setdefault(key, []).append(item)
def set_item(self, key, item):
"""Directly store the item with the given key."""
self.data[key] = item
def __nonzero__(self):
"""Return true if self.data contains something."""
if self.data: return 1
return 0
def __deepcopy__(self, memo):
raise NotImplementedError('override this method')
def copy(self):
"""Return a deep copy of the object itself."""
return deepcopy(self)
def flatten(seq, toDescend=(list, dict, tuple), yieldDictKeys=0,
onlyKeysType=(_Container,), scalar=None):
"""Iterate over nested lists and dictionaries; toDescend is a list
or a tuple of types to be considered non-scalar; if yieldDictKeys is
true, also dictionaries' keys are yielded; if scalar is not None, only
items of the given type(s) are yielded."""
if scalar is None or isinstance(seq, scalar):
yield seq
if isinstance(seq, toDescend):
if isinstance(seq, (dict, _Container)):
if yieldDictKeys:
# Yield also the keys of the dictionary.
for key in seq.iterkeys():
for k in flatten(key, toDescend=toDescend,
yieldDictKeys=yieldDictKeys,
onlyKeysType=onlyKeysType, scalar=scalar):
if onlyKeysType and isinstance(k, onlyKeysType):
yield k
for value in seq.itervalues():
for v in flatten(value, toDescend=toDescend,
yieldDictKeys=yieldDictKeys,
onlyKeysType=onlyKeysType, scalar=scalar):
yield v
elif not isinstance(seq, (str, unicode, int, float)):
for item in seq:
for i in flatten(item, toDescend=toDescend,
yieldDictKeys=yieldDictKeys,
onlyKeysType=onlyKeysType, scalar=scalar):
yield i
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