diff options
Diffstat (limited to 'pytz/__init__.py')
-rw-r--r-- | pytz/__init__.py | 1513 |
1 files changed, 1513 insertions, 0 deletions
diff --git a/pytz/__init__.py b/pytz/__init__.py new file mode 100644 index 0000000..e5cbe56 --- /dev/null +++ b/pytz/__init__.py @@ -0,0 +1,1513 @@ +''' +datetime.tzinfo timezone definitions generated from the +Olson timezone database: + + ftp://elsie.nci.nih.gov/pub/tz*.tar.gz + +See the datetime section of the Python Library Reference for information +on how to use these modules. +''' + +# The Olson database is updated several times a year. +OLSON_VERSION = '2014j' +VERSION = '2014.10' # Switching to pip compatible version numbering. +__version__ = VERSION + +OLSEN_VERSION = OLSON_VERSION # Old releases had this misspelling + +__all__ = [ + 'timezone', 'utc', 'country_timezones', 'country_names', + 'AmbiguousTimeError', 'InvalidTimeError', + 'NonExistentTimeError', 'UnknownTimeZoneError', + 'all_timezones', 'all_timezones_set', + 'common_timezones', 'common_timezones_set', + ] + +import sys, datetime, os.path, gettext + +try: + from pkg_resources import resource_stream +except ImportError: + resource_stream = None + +from pytz.exceptions import AmbiguousTimeError +from pytz.exceptions import InvalidTimeError +from pytz.exceptions import NonExistentTimeError +from pytz.exceptions import UnknownTimeZoneError +from pytz.lazy import LazyDict, LazyList, LazySet +from pytz.tzinfo import unpickler +from pytz.tzfile import build_tzinfo, _byte_string + + +try: + unicode + +except NameError: # Python 3.x + + # Python 3.x doesn't have unicode(), making writing code + # for Python 2.3 and Python 3.x a pain. + unicode = str + + def ascii(s): + r""" + >>> ascii('Hello') + 'Hello' + >>> ascii('\N{TRADE MARK SIGN}') #doctest: +IGNORE_EXCEPTION_DETAIL + Traceback (most recent call last): + ... + UnicodeEncodeError: ... + """ + s.encode('US-ASCII') # Raise an exception if not ASCII + return s # But return the original string - not a byte string. + +else: # Python 2.x + + def ascii(s): + r""" + >>> ascii('Hello') + 'Hello' + >>> ascii(u'Hello') + 'Hello' + >>> ascii(u'\N{TRADE MARK SIGN}') #doctest: +IGNORE_EXCEPTION_DETAIL + Traceback (most recent call last): + ... + UnicodeEncodeError: ... + """ + return s.encode('US-ASCII') + + +def open_resource(name): + """Open a resource from the zoneinfo subdir for reading. + + Uses the pkg_resources module if available and no standard file + found at the calculated location. + """ + name_parts = name.lstrip('/').split('/') + for part in name_parts: + if part == os.path.pardir or os.path.sep in part: + raise ValueError('Bad path segment: %r' % part) + filename = os.path.join(os.path.dirname(__file__), + 'zoneinfo', *name_parts) + if not os.path.exists(filename) and resource_stream is not None: + # http://bugs.launchpad.net/bugs/383171 - we avoid using this + # unless absolutely necessary to help when a broken version of + # pkg_resources is installed. + return resource_stream(__name__, 'zoneinfo/' + name) + return open(filename, 'rb') + + +def resource_exists(name): + """Return true if the given resource exists""" + try: + open_resource(name).close() + return True + except IOError: + return False + + +# Enable this when we get some translations? +# We want an i18n API that is useful to programs using Python's gettext +# module, as well as the Zope3 i18n package. Perhaps we should just provide +# the POT file and translations, and leave it up to callers to make use +# of them. +# +# t = gettext.translation( +# 'pytz', os.path.join(os.path.dirname(__file__), 'locales'), +# fallback=True +# ) +# def _(timezone_name): +# """Translate a timezone name using the current locale, returning Unicode""" +# return t.ugettext(timezone_name) + + +_tzinfo_cache = {} + +def timezone(zone): + r''' Return a datetime.tzinfo implementation for the given timezone + + >>> from datetime import datetime, timedelta + >>> utc = timezone('UTC') + >>> eastern = timezone('US/Eastern') + >>> eastern.zone + 'US/Eastern' + >>> timezone(unicode('US/Eastern')) is eastern + True + >>> utc_dt = datetime(2002, 10, 27, 6, 0, 0, tzinfo=utc) + >>> loc_dt = utc_dt.astimezone(eastern) + >>> fmt = '%Y-%m-%d %H:%M:%S %Z (%z)' + >>> loc_dt.strftime(fmt) + '2002-10-27 01:00:00 EST (-0500)' + >>> (loc_dt - timedelta(minutes=10)).strftime(fmt) + '2002-10-27 00:50:00 EST (-0500)' + >>> eastern.normalize(loc_dt - timedelta(minutes=10)).strftime(fmt) + '2002-10-27 01:50:00 EDT (-0400)' + >>> (loc_dt + timedelta(minutes=10)).strftime(fmt) + '2002-10-27 01:10:00 EST (-0500)' + + Raises UnknownTimeZoneError if passed an unknown zone. + + >>> try: + ... timezone('Asia/Shangri-La') + ... except UnknownTimeZoneError: + ... print('Unknown') + Unknown + + >>> try: + ... timezone(unicode('\N{TRADE MARK SIGN}')) + ... except UnknownTimeZoneError: + ... print('Unknown') + Unknown + + ''' + if zone.upper() == 'UTC': + return utc + + try: + zone = ascii(zone) + except UnicodeEncodeError: + # All valid timezones are ASCII + raise UnknownTimeZoneError(zone) + + zone = _unmunge_zone(zone) + if zone not in _tzinfo_cache: + if zone in all_timezones_set: + fp = open_resource(zone) + try: + _tzinfo_cache[zone] = build_tzinfo(zone, fp) + finally: + fp.close() + else: + raise UnknownTimeZoneError(zone) + + return _tzinfo_cache[zone] + + +def _unmunge_zone(zone): + """Undo the time zone name munging done by older versions of pytz.""" + return zone.replace('_plus_', '+').replace('_minus_', '-') + + +ZERO = datetime.timedelta(0) +HOUR = datetime.timedelta(hours=1) + + +class UTC(datetime.tzinfo): + """UTC + + Optimized UTC implementation. It unpickles using the single module global + instance defined beneath this class declaration. + """ + zone = "UTC" + + _utcoffset = ZERO + _dst = ZERO + _tzname = zone + + def fromutc(self, dt): + if dt.tzinfo is None: + return self.localize(dt) + return super(utc.__class__, self).fromutc(dt) + + def utcoffset(self, dt): + return ZERO + + def tzname(self, dt): + return "UTC" + + def dst(self, dt): + return ZERO + + def __reduce__(self): + return _UTC, () + + def localize(self, dt, is_dst=False): + '''Convert naive time to local time''' + if dt.tzinfo is not None: + raise ValueError('Not naive datetime (tzinfo is already set)') + return dt.replace(tzinfo=self) + + def normalize(self, dt, is_dst=False): + '''Correct the timezone information on the given datetime''' + if dt.tzinfo is self: + return dt + if dt.tzinfo is None: + raise ValueError('Naive time - no tzinfo set') + return dt.astimezone(self) + + def __repr__(self): + return "<UTC>" + + def __str__(self): + return "UTC" + + +UTC = utc = UTC() # UTC is a singleton + + +def _UTC(): + """Factory function for utc unpickling. + + Makes sure that unpickling a utc instance always returns the same + module global. + + These examples belong in the UTC class above, but it is obscured; or in + the README.txt, but we are not depending on Python 2.4 so integrating + the README.txt examples with the unit tests is not trivial. + + >>> import datetime, pickle + >>> dt = datetime.datetime(2005, 3, 1, 14, 13, 21, tzinfo=utc) + >>> naive = dt.replace(tzinfo=None) + >>> p = pickle.dumps(dt, 1) + >>> naive_p = pickle.dumps(naive, 1) + >>> len(p) - len(naive_p) + 17 + >>> new = pickle.loads(p) + >>> new == dt + True + >>> new is dt + False + >>> new.tzinfo is dt.tzinfo + True + >>> utc is UTC is timezone('UTC') + True + >>> utc is timezone('GMT') + False + """ + return utc +_UTC.__safe_for_unpickling__ = True + + +def _p(*args): + """Factory function for unpickling pytz tzinfo instances. + + Just a wrapper around tzinfo.unpickler to save a few bytes in each pickle + by shortening the path. + """ + return unpickler(*args) +_p.__safe_for_unpickling__ = True + + + +class _CountryTimezoneDict(LazyDict): + """Map ISO 3166 country code to a list of timezone names commonly used + in that country. + + iso3166_code is the two letter code used to identify the country. + + >>> def print_list(list_of_strings): + ... 'We use a helper so doctests work under Python 2.3 -> 3.x' + ... for s in list_of_strings: + ... print(s) + + >>> print_list(country_timezones['nz']) + Pacific/Auckland + Pacific/Chatham + >>> print_list(country_timezones['ch']) + Europe/Zurich + >>> print_list(country_timezones['CH']) + Europe/Zurich + >>> print_list(country_timezones[unicode('ch')]) + Europe/Zurich + >>> print_list(country_timezones['XXX']) + Traceback (most recent call last): + ... + KeyError: 'XXX' + + Previously, this information was exposed as a function rather than a + dictionary. This is still supported:: + + >>> print_list(country_timezones('nz')) + Pacific/Auckland + Pacific/Chatham + """ + def __call__(self, iso3166_code): + """Backwards compatibility.""" + return self[iso3166_code] + + def _fill(self): + data = {} + zone_tab = open_resource('zone.tab') + try: + for line in zone_tab: + line = line.decode('US-ASCII') + if line.startswith('#'): + continue + code, coordinates, zone = line.split(None, 4)[:3] + if zone not in all_timezones_set: + continue + try: + data[code].append(zone) + except KeyError: + data[code] = [zone] + self.data = data + finally: + zone_tab.close() + +country_timezones = _CountryTimezoneDict() + + +class _CountryNameDict(LazyDict): + '''Dictionary proving ISO3166 code -> English name. + + >>> print(country_names['au']) + Australia + ''' + def _fill(self): + data = {} + zone_tab = open_resource('iso3166.tab') + try: + for line in zone_tab.readlines(): + line = line.decode('US-ASCII') + if line.startswith('#'): + continue + code, name = line.split(None, 1) + data[code] = name.strip() + self.data = data + finally: + zone_tab.close() + +country_names = _CountryNameDict() + + +# Time-zone info based solely on fixed offsets + +class _FixedOffset(datetime.tzinfo): + + zone = None # to match the standard pytz API + + def __init__(self, minutes): + if abs(minutes) >= 1440: + raise ValueError("absolute offset is too large", minutes) + self._minutes = minutes + self._offset = datetime.timedelta(minutes=minutes) + + def utcoffset(self, dt): + return self._offset + + def __reduce__(self): + return FixedOffset, (self._minutes, ) + + def dst(self, dt): + return ZERO + + def tzname(self, dt): + return None + + def __repr__(self): + return 'pytz.FixedOffset(%d)' % self._minutes + + def localize(self, dt, is_dst=False): + '''Convert naive time to local time''' + if dt.tzinfo is not None: + raise ValueError('Not naive datetime (tzinfo is already set)') + return dt.replace(tzinfo=self) + + def normalize(self, dt, is_dst=False): + '''Correct the timezone information on the given datetime''' + if dt.tzinfo is None: + raise ValueError('Naive time - no tzinfo set') + return dt.replace(tzinfo=self) + + +def FixedOffset(offset, _tzinfos = {}): + """return a fixed-offset timezone based off a number of minutes. + + >>> one = FixedOffset(-330) + >>> one + pytz.FixedOffset(-330) + >>> one.utcoffset(datetime.datetime.now()) + datetime.timedelta(-1, 66600) + >>> one.dst(datetime.datetime.now()) + datetime.timedelta(0) + + >>> two = FixedOffset(1380) + >>> two + pytz.FixedOffset(1380) + >>> two.utcoffset(datetime.datetime.now()) + datetime.timedelta(0, 82800) + >>> two.dst(datetime.datetime.now()) + datetime.timedelta(0) + + The datetime.timedelta must be between the range of -1 and 1 day, + non-inclusive. + + >>> FixedOffset(1440) + Traceback (most recent call last): + ... + ValueError: ('absolute offset is too large', 1440) + + >>> FixedOffset(-1440) + Traceback (most recent call last): + ... + ValueError: ('absolute offset is too large', -1440) + + An offset of 0 is special-cased to return UTC. + + >>> FixedOffset(0) is UTC + True + + There should always be only one instance of a FixedOffset per timedelta. + This should be true for multiple creation calls. + + >>> FixedOffset(-330) is one + True + >>> FixedOffset(1380) is two + True + + It should also be true for pickling. + + >>> import pickle + >>> pickle.loads(pickle.dumps(one)) is one + True + >>> pickle.loads(pickle.dumps(two)) is two + True + """ + if offset == 0: + return UTC + + info = _tzinfos.get(offset) + if info is None: + # We haven't seen this one before. we need to save it. + + # Use setdefault to avoid a race condition and make sure we have + # only one + info = _tzinfos.setdefault(offset, _FixedOffset(offset)) + + return info + +FixedOffset.__safe_for_unpickling__ = True + + +def _test(): + import doctest, os, sys + sys.path.insert(0, os.pardir) + import pytz + return doctest.testmod(pytz) + +if __name__ == '__main__': + _test() + +all_timezones = \ +['Africa/Abidjan', + 'Africa/Accra', + 'Africa/Addis_Ababa', + 'Africa/Algiers', + 'Africa/Asmara', + 'Africa/Asmera', + 'Africa/Bamako', + 'Africa/Bangui', + 'Africa/Banjul', + 'Africa/Bissau', + 'Africa/Blantyre', + 'Africa/Brazzaville', + 'Africa/Bujumbura', + 'Africa/Cairo', + 'Africa/Casablanca', + 'Africa/Ceuta', + 'Africa/Conakry', + 'Africa/Dakar', + 'Africa/Dar_es_Salaam', + 'Africa/Djibouti', + 'Africa/Douala', + 'Africa/El_Aaiun', + 'Africa/Freetown', + 'Africa/Gaborone', + 'Africa/Harare', + 'Africa/Johannesburg', + 'Africa/Juba', + 'Africa/Kampala', + 'Africa/Khartoum', + 'Africa/Kigali', + 'Africa/Kinshasa', + 'Africa/Lagos', + 'Africa/Libreville', + 'Africa/Lome', + 'Africa/Luanda', + 'Africa/Lubumbashi', + 'Africa/Lusaka', + 'Africa/Malabo', + 'Africa/Maputo', + 'Africa/Maseru', + 'Africa/Mbabane', + 'Africa/Mogadishu', + 'Africa/Monrovia', + 'Africa/Nairobi', + 'Africa/Ndjamena', + 'Africa/Niamey', + 'Africa/Nouakchott', + 'Africa/Ouagadougou', + 'Africa/Porto-Novo', + 'Africa/Sao_Tome', + 'Africa/Timbuktu', + 'Africa/Tripoli', + 'Africa/Tunis', + 'Africa/Windhoek', + 'America/Adak', + 'America/Anchorage', + 'America/Anguilla', + 'America/Antigua', + 'America/Araguaina', + 'America/Argentina/Buenos_Aires', + 'America/Argentina/Catamarca', + 'America/Argentina/ComodRivadavia', + 'America/Argentina/Cordoba', + 'America/Argentina/Jujuy', + 'America/Argentina/La_Rioja', + 'America/Argentina/Mendoza', + 'America/Argentina/Rio_Gallegos', + 'America/Argentina/Salta', + 'America/Argentina/San_Juan', + 'America/Argentina/San_Luis', + 'America/Argentina/Tucuman', + 'America/Argentina/Ushuaia', + 'America/Aruba', + 'America/Asuncion', + 'America/Atikokan', + 'America/Atka', + 'America/Bahia', + 'America/Bahia_Banderas', + 'America/Barbados', + 'America/Belem', + 'America/Belize', + 'America/Blanc-Sablon', + 'America/Boa_Vista', + 'America/Bogota', + 'America/Boise', + 'America/Buenos_Aires', + 'America/Cambridge_Bay', + 'America/Campo_Grande', + 'America/Cancun', + 'America/Caracas', + 'America/Catamarca', + 'America/Cayenne', + 'America/Cayman', + 'America/Chicago', + 'America/Chihuahua', + 'America/Coral_Harbour', + 'America/Cordoba', + 'America/Costa_Rica', + 'America/Creston', + 'America/Cuiaba', + 'America/Curacao', + 'America/Danmarkshavn', + 'America/Dawson', + 'America/Dawson_Creek', + 'America/Denver', + 'America/Detroit', + 'America/Dominica', + 'America/Edmonton', + 'America/Eirunepe', + 'America/El_Salvador', + 'America/Ensenada', + 'America/Fort_Wayne', + 'America/Fortaleza', + 'America/Glace_Bay', + 'America/Godthab', + 'America/Goose_Bay', + 'America/Grand_Turk', + 'America/Grenada', + 'America/Guadeloupe', + 'America/Guatemala', + 'America/Guayaquil', + 'America/Guyana', + 'America/Halifax', + 'America/Havana', + 'America/Hermosillo', + 'America/Indiana/Indianapolis', + 'America/Indiana/Knox', + 'America/Indiana/Marengo', + 'America/Indiana/Petersburg', + 'America/Indiana/Tell_City', + 'America/Indiana/Vevay', + 'America/Indiana/Vincennes', + 'America/Indiana/Winamac', + 'America/Indianapolis', + 'America/Inuvik', + 'America/Iqaluit', + 'America/Jamaica', + 'America/Jujuy', + 'America/Juneau', + 'America/Kentucky/Louisville', + 'America/Kentucky/Monticello', + 'America/Knox_IN', + 'America/Kralendijk', + 'America/La_Paz', + 'America/Lima', + 'America/Los_Angeles', + 'America/Louisville', + 'America/Lower_Princes', + 'America/Maceio', + 'America/Managua', + 'America/Manaus', + 'America/Marigot', + 'America/Martinique', + 'America/Matamoros', + 'America/Mazatlan', + 'America/Mendoza', + 'America/Menominee', + 'America/Merida', + 'America/Metlakatla', + 'America/Mexico_City', + 'America/Miquelon', + 'America/Moncton', + 'America/Monterrey', + 'America/Montevideo', + 'America/Montreal', + 'America/Montserrat', + 'America/Nassau', + 'America/New_York', + 'America/Nipigon', + 'America/Nome', + 'America/Noronha', + 'America/North_Dakota/Beulah', + 'America/North_Dakota/Center', + 'America/North_Dakota/New_Salem', + 'America/Ojinaga', + 'America/Panama', + 'America/Pangnirtung', + 'America/Paramaribo', + 'America/Phoenix', + 'America/Port-au-Prince', + 'America/Port_of_Spain', + 'America/Porto_Acre', + 'America/Porto_Velho', + 'America/Puerto_Rico', + 'America/Rainy_River', + 'America/Rankin_Inlet', + 'America/Recife', + 'America/Regina', + 'America/Resolute', + 'America/Rio_Branco', + 'America/Rosario', + 'America/Santa_Isabel', + 'America/Santarem', + 'America/Santiago', + 'America/Santo_Domingo', + 'America/Sao_Paulo', + 'America/Scoresbysund', + 'America/Shiprock', + 'America/Sitka', + 'America/St_Barthelemy', + 'America/St_Johns', + 'America/St_Kitts', + 'America/St_Lucia', + 'America/St_Thomas', + 'America/St_Vincent', + 'America/Swift_Current', + 'America/Tegucigalpa', + 'America/Thule', + 'America/Thunder_Bay', + 'America/Tijuana', + 'America/Toronto', + 'America/Tortola', + 'America/Vancouver', + 'America/Virgin', + 'America/Whitehorse', + 'America/Winnipeg', + 'America/Yakutat', + 'America/Yellowknife', + 'Antarctica/Casey', + 'Antarctica/Davis', + 'Antarctica/DumontDUrville', + 'Antarctica/Macquarie', + 'Antarctica/Mawson', + 'Antarctica/McMurdo', + 'Antarctica/Palmer', + 'Antarctica/Rothera', + 'Antarctica/South_Pole', + 'Antarctica/Syowa', + 'Antarctica/Troll', + 'Antarctica/Vostok', + 'Arctic/Longyearbyen', + 'Asia/Aden', + 'Asia/Almaty', + 'Asia/Amman', + 'Asia/Anadyr', + 'Asia/Aqtau', + 'Asia/Aqtobe', + 'Asia/Ashgabat', + 'Asia/Ashkhabad', + 'Asia/Baghdad', + 'Asia/Bahrain', + 'Asia/Baku', + 'Asia/Bangkok', + 'Asia/Beirut', + 'Asia/Bishkek', + 'Asia/Brunei', + 'Asia/Calcutta', + 'Asia/Chita', + 'Asia/Choibalsan', + 'Asia/Chongqing', + 'Asia/Chungking', + 'Asia/Colombo', + 'Asia/Dacca', + 'Asia/Damascus', + 'Asia/Dhaka', + 'Asia/Dili', + 'Asia/Dubai', + 'Asia/Dushanbe', + 'Asia/Gaza', + 'Asia/Harbin', + 'Asia/Hebron', + 'Asia/Ho_Chi_Minh', + 'Asia/Hong_Kong', + 'Asia/Hovd', + 'Asia/Irkutsk', + 'Asia/Istanbul', + 'Asia/Jakarta', + 'Asia/Jayapura', + 'Asia/Jerusalem', + 'Asia/Kabul', + 'Asia/Kamchatka', + 'Asia/Karachi', + 'Asia/Kashgar', + 'Asia/Kathmandu', + 'Asia/Katmandu', + 'Asia/Khandyga', + 'Asia/Kolkata', + 'Asia/Krasnoyarsk', + 'Asia/Kuala_Lumpur', + 'Asia/Kuching', + 'Asia/Kuwait', + 'Asia/Macao', + 'Asia/Macau', + 'Asia/Magadan', + 'Asia/Makassar', + 'Asia/Manila', + 'Asia/Muscat', + 'Asia/Nicosia', + 'Asia/Novokuznetsk', + 'Asia/Novosibirsk', + 'Asia/Omsk', + 'Asia/Oral', + 'Asia/Phnom_Penh', + 'Asia/Pontianak', + 'Asia/Pyongyang', + 'Asia/Qatar', + 'Asia/Qyzylorda', + 'Asia/Rangoon', + 'Asia/Riyadh', + 'Asia/Saigon', + 'Asia/Sakhalin', + 'Asia/Samarkand', + 'Asia/Seoul', + 'Asia/Shanghai', + 'Asia/Singapore', + 'Asia/Srednekolymsk', + 'Asia/Taipei', + 'Asia/Tashkent', + 'Asia/Tbilisi', + 'Asia/Tehran', + 'Asia/Tel_Aviv', + 'Asia/Thimbu', + 'Asia/Thimphu', + 'Asia/Tokyo', + 'Asia/Ujung_Pandang', + 'Asia/Ulaanbaatar', + 'Asia/Ulan_Bator', + 'Asia/Urumqi', + 'Asia/Ust-Nera', + 'Asia/Vientiane', + 'Asia/Vladivostok', + 'Asia/Yakutsk', + 'Asia/Yekaterinburg', + 'Asia/Yerevan', + 'Atlantic/Azores', + 'Atlantic/Bermuda', + 'Atlantic/Canary', + 'Atlantic/Cape_Verde', + 'Atlantic/Faeroe', + 'Atlantic/Faroe', + 'Atlantic/Jan_Mayen', + 'Atlantic/Madeira', + 'Atlantic/Reykjavik', + 'Atlantic/South_Georgia', + 'Atlantic/St_Helena', + 'Atlantic/Stanley', + 'Australia/ACT', + 'Australia/Adelaide', + 'Australia/Brisbane', + 'Australia/Broken_Hill', + 'Australia/Canberra', + 'Australia/Currie', + 'Australia/Darwin', + 'Australia/Eucla', + 'Australia/Hobart', + 'Australia/LHI', + 'Australia/Lindeman', + 'Australia/Lord_Howe', + 'Australia/Melbourne', + 'Australia/NSW', + 'Australia/North', + 'Australia/Perth', + 'Australia/Queensland', + 'Australia/South', + 'Australia/Sydney', + 'Australia/Tasmania', + 'Australia/Victoria', + 'Australia/West', + 'Australia/Yancowinna', + 'Brazil/Acre', + 'Brazil/DeNoronha', + 'Brazil/East', + 'Brazil/West', + 'CET', + 'CST6CDT', + 'Canada/Atlantic', + 'Canada/Central', + 'Canada/East-Saskatchewan', + 'Canada/Eastern', + 'Canada/Mountain', + 'Canada/Newfoundland', + 'Canada/Pacific', + 'Canada/Saskatchewan', + 'Canada/Yukon', + 'Chile/Continental', + 'Chile/EasterIsland', + 'Cuba', + 'EET', + 'EST', + 'EST5EDT', + 'Egypt', + 'Eire', + 'Etc/GMT', + 'Etc/GMT+0', + 'Etc/GMT+1', + 'Etc/GMT+10', + 'Etc/GMT+11', + 'Etc/GMT+12', + 'Etc/GMT+2', + 'Etc/GMT+3', + 'Etc/GMT+4', + 'Etc/GMT+5', + 'Etc/GMT+6', + 'Etc/GMT+7', + 'Etc/GMT+8', + 'Etc/GMT+9', + 'Etc/GMT-0', + 'Etc/GMT-1', + 'Etc/GMT-10', + 'Etc/GMT-11', + 'Etc/GMT-12', + 'Etc/GMT-13', + 'Etc/GMT-14', + 'Etc/GMT-2', + 'Etc/GMT-3', + 'Etc/GMT-4', + 'Etc/GMT-5', + 'Etc/GMT-6', + 'Etc/GMT-7', + 'Etc/GMT-8', + 'Etc/GMT-9', + 'Etc/GMT0', + 'Etc/Greenwich', + 'Etc/UCT', + 'Etc/UTC', + 'Etc/Universal', + 'Etc/Zulu', + 'Europe/Amsterdam', + 'Europe/Andorra', + 'Europe/Athens', + 'Europe/Belfast', + 'Europe/Belgrade', + 'Europe/Berlin', + 'Europe/Bratislava', + 'Europe/Brussels', + 'Europe/Bucharest', + 'Europe/Budapest', + 'Europe/Busingen', + 'Europe/Chisinau', + 'Europe/Copenhagen', + 'Europe/Dublin', + 'Europe/Gibraltar', + 'Europe/Guernsey', + 'Europe/Helsinki', + 'Europe/Isle_of_Man', + 'Europe/Istanbul', + 'Europe/Jersey', + 'Europe/Kaliningrad', + 'Europe/Kiev', + 'Europe/Lisbon', + 'Europe/Ljubljana', + 'Europe/London', + 'Europe/Luxembourg', + 'Europe/Madrid', + 'Europe/Malta', + 'Europe/Mariehamn', + 'Europe/Minsk', + 'Europe/Monaco', + 'Europe/Moscow', + 'Europe/Nicosia', + 'Europe/Oslo', + 'Europe/Paris', + 'Europe/Podgorica', + 'Europe/Prague', + 'Europe/Riga', + 'Europe/Rome', + 'Europe/Samara', + 'Europe/San_Marino', + 'Europe/Sarajevo', + 'Europe/Simferopol', + 'Europe/Skopje', + 'Europe/Sofia', + 'Europe/Stockholm', + 'Europe/Tallinn', + 'Europe/Tirane', + 'Europe/Tiraspol', + 'Europe/Uzhgorod', + 'Europe/Vaduz', + 'Europe/Vatican', + 'Europe/Vienna', + 'Europe/Vilnius', + 'Europe/Volgograd', + 'Europe/Warsaw', + 'Europe/Zagreb', + 'Europe/Zaporozhye', + 'Europe/Zurich', + 'GB', + 'GB-Eire', + 'GMT', + 'GMT+0', + 'GMT-0', + 'GMT0', + 'Greenwich', + 'HST', + 'Hongkong', + 'Iceland', + 'Indian/Antananarivo', + 'Indian/Chagos', + 'Indian/Christmas', + 'Indian/Cocos', + 'Indian/Comoro', + 'Indian/Kerguelen', + 'Indian/Mahe', + 'Indian/Maldives', + 'Indian/Mauritius', + 'Indian/Mayotte', + 'Indian/Reunion', + 'Iran', + 'Israel', + 'Jamaica', + 'Japan', + 'Kwajalein', + 'Libya', + 'MET', + 'MST', + 'MST7MDT', + 'Mexico/BajaNorte', + 'Mexico/BajaSur', + 'Mexico/General', + 'NZ', + 'NZ-CHAT', + 'Navajo', + 'PRC', + 'PST8PDT', + 'Pacific/Apia', + 'Pacific/Auckland', + 'Pacific/Bougainville', + 'Pacific/Chatham', + 'Pacific/Chuuk', + 'Pacific/Easter', + 'Pacific/Efate', + 'Pacific/Enderbury', + 'Pacific/Fakaofo', + 'Pacific/Fiji', + 'Pacific/Funafuti', + 'Pacific/Galapagos', + 'Pacific/Gambier', + 'Pacific/Guadalcanal', + 'Pacific/Guam', + 'Pacific/Honolulu', + 'Pacific/Johnston', + 'Pacific/Kiritimati', + 'Pacific/Kosrae', + 'Pacific/Kwajalein', + 'Pacific/Majuro', + 'Pacific/Marquesas', + 'Pacific/Midway', + 'Pacific/Nauru', + 'Pacific/Niue', + 'Pacific/Norfolk', + 'Pacific/Noumea', + 'Pacific/Pago_Pago', + 'Pacific/Palau', + 'Pacific/Pitcairn', + 'Pacific/Pohnpei', + 'Pacific/Ponape', + 'Pacific/Port_Moresby', + 'Pacific/Rarotonga', + 'Pacific/Saipan', + 'Pacific/Samoa', + 'Pacific/Tahiti', + 'Pacific/Tarawa', + 'Pacific/Tongatapu', + 'Pacific/Truk', + 'Pacific/Wake', + 'Pacific/Wallis', + 'Pacific/Yap', + 'Poland', + 'Portugal', + 'ROC', + 'ROK', + 'Singapore', + 'Turkey', + 'UCT', + 'US/Alaska', + 'US/Aleutian', + 'US/Arizona', + 'US/Central', + 'US/East-Indiana', + 'US/Eastern', + 'US/Hawaii', + 'US/Indiana-Starke', + 'US/Michigan', + 'US/Mountain', + 'US/Pacific', + 'US/Pacific-New', + 'US/Samoa', + 'UTC', + 'Universal', + 'W-SU', + 'WET', + 'Zulu'] +all_timezones = LazyList( + tz for tz in all_timezones if resource_exists(tz)) + +all_timezones_set = LazySet(all_timezones) +common_timezones = \ +['Africa/Abidjan', + 'Africa/Accra', + 'Africa/Addis_Ababa', + 'Africa/Algiers', + 'Africa/Asmara', + 'Africa/Bamako', + 'Africa/Bangui', + 'Africa/Banjul', + 'Africa/Bissau', + 'Africa/Blantyre', + 'Africa/Brazzaville', + 'Africa/Bujumbura', + 'Africa/Cairo', + 'Africa/Casablanca', + 'Africa/Ceuta', + 'Africa/Conakry', + 'Africa/Dakar', + 'Africa/Dar_es_Salaam', + 'Africa/Djibouti', + 'Africa/Douala', + 'Africa/El_Aaiun', + 'Africa/Freetown', + 'Africa/Gaborone', + 'Africa/Harare', + 'Africa/Johannesburg', + 'Africa/Juba', + 'Africa/Kampala', + 'Africa/Khartoum', + 'Africa/Kigali', + 'Africa/Kinshasa', + 'Africa/Lagos', + 'Africa/Libreville', + 'Africa/Lome', + 'Africa/Luanda', + 'Africa/Lubumbashi', + 'Africa/Lusaka', + 'Africa/Malabo', + 'Africa/Maputo', + 'Africa/Maseru', + 'Africa/Mbabane', + 'Africa/Mogadishu', + 'Africa/Monrovia', + 'Africa/Nairobi', + 'Africa/Ndjamena', + 'Africa/Niamey', + 'Africa/Nouakchott', + 'Africa/Ouagadougou', + 'Africa/Porto-Novo', + 'Africa/Sao_Tome', + 'Africa/Tripoli', + 'Africa/Tunis', + 'Africa/Windhoek', + 'America/Adak', + 'America/Anchorage', + 'America/Anguilla', + 'America/Antigua', + 'America/Araguaina', + 'America/Argentina/Buenos_Aires', + 'America/Argentina/Catamarca', + 'America/Argentina/Cordoba', + 'America/Argentina/Jujuy', + 'America/Argentina/La_Rioja', + 'America/Argentina/Mendoza', + 'America/Argentina/Rio_Gallegos', + 'America/Argentina/Salta', + 'America/Argentina/San_Juan', + 'America/Argentina/San_Luis', + 'America/Argentina/Tucuman', + 'America/Argentina/Ushuaia', + 'America/Aruba', + 'America/Asuncion', + 'America/Atikokan', + 'America/Bahia', + 'America/Bahia_Banderas', + 'America/Barbados', + 'America/Belem', + 'America/Belize', + 'America/Blanc-Sablon', + 'America/Boa_Vista', + 'America/Bogota', + 'America/Boise', + 'America/Cambridge_Bay', + 'America/Campo_Grande', + 'America/Cancun', + 'America/Caracas', + 'America/Cayenne', + 'America/Cayman', + 'America/Chicago', + 'America/Chihuahua', + 'America/Costa_Rica', + 'America/Creston', + 'America/Cuiaba', + 'America/Curacao', + 'America/Danmarkshavn', + 'America/Dawson', + 'America/Dawson_Creek', + 'America/Denver', + 'America/Detroit', + 'America/Dominica', + 'America/Edmonton', + 'America/Eirunepe', + 'America/El_Salvador', + 'America/Fortaleza', + 'America/Glace_Bay', + 'America/Godthab', + 'America/Goose_Bay', + 'America/Grand_Turk', + 'America/Grenada', + 'America/Guadeloupe', + 'America/Guatemala', + 'America/Guayaquil', + 'America/Guyana', + 'America/Halifax', + 'America/Havana', + 'America/Hermosillo', + 'America/Indiana/Indianapolis', + 'America/Indiana/Knox', + 'America/Indiana/Marengo', + 'America/Indiana/Petersburg', + 'America/Indiana/Tell_City', + 'America/Indiana/Vevay', + 'America/Indiana/Vincennes', + 'America/Indiana/Winamac', + 'America/Inuvik', + 'America/Iqaluit', + 'America/Jamaica', + 'America/Juneau', + 'America/Kentucky/Louisville', + 'America/Kentucky/Monticello', + 'America/Kralendijk', + 'America/La_Paz', + 'America/Lima', + 'America/Los_Angeles', + 'America/Lower_Princes', + 'America/Maceio', + 'America/Managua', + 'America/Manaus', + 'America/Marigot', + 'America/Martinique', + 'America/Matamoros', + 'America/Mazatlan', + 'America/Menominee', + 'America/Merida', + 'America/Metlakatla', + 'America/Mexico_City', + 'America/Miquelon', + 'America/Moncton', + 'America/Monterrey', + 'America/Montevideo', + 'America/Montreal', + 'America/Montserrat', + 'America/Nassau', + 'America/New_York', + 'America/Nipigon', + 'America/Nome', + 'America/Noronha', + 'America/North_Dakota/Beulah', + 'America/North_Dakota/Center', + 'America/North_Dakota/New_Salem', + 'America/Ojinaga', + 'America/Panama', + 'America/Pangnirtung', + 'America/Paramaribo', + 'America/Phoenix', + 'America/Port-au-Prince', + 'America/Port_of_Spain', + 'America/Porto_Velho', + 'America/Puerto_Rico', + 'America/Rainy_River', + 'America/Rankin_Inlet', + 'America/Recife', + 'America/Regina', + 'America/Resolute', + 'America/Rio_Branco', + 'America/Santa_Isabel', + 'America/Santarem', + 'America/Santiago', + 'America/Santo_Domingo', + 'America/Sao_Paulo', + 'America/Scoresbysund', + 'America/Sitka', + 'America/St_Barthelemy', + 'America/St_Johns', + 'America/St_Kitts', + 'America/St_Lucia', + 'America/St_Thomas', + 'America/St_Vincent', + 'America/Swift_Current', + 'America/Tegucigalpa', + 'America/Thule', + 'America/Thunder_Bay', + 'America/Tijuana', + 'America/Toronto', + 'America/Tortola', + 'America/Vancouver', + 'America/Whitehorse', + 'America/Winnipeg', + 'America/Yakutat', + 'America/Yellowknife', + 'Antarctica/Casey', + 'Antarctica/Davis', + 'Antarctica/DumontDUrville', + 'Antarctica/Macquarie', + 'Antarctica/Mawson', + 'Antarctica/McMurdo', + 'Antarctica/Palmer', + 'Antarctica/Rothera', + 'Antarctica/Syowa', + 'Antarctica/Troll', + 'Antarctica/Vostok', + 'Arctic/Longyearbyen', + 'Asia/Aden', + 'Asia/Almaty', + 'Asia/Amman', + 'Asia/Anadyr', + 'Asia/Aqtau', + 'Asia/Aqtobe', + 'Asia/Ashgabat', + 'Asia/Baghdad', + 'Asia/Bahrain', + 'Asia/Baku', + 'Asia/Bangkok', + 'Asia/Beirut', + 'Asia/Bishkek', + 'Asia/Brunei', + 'Asia/Chita', + 'Asia/Choibalsan', + 'Asia/Colombo', + 'Asia/Damascus', + 'Asia/Dhaka', + 'Asia/Dili', + 'Asia/Dubai', + 'Asia/Dushanbe', + 'Asia/Gaza', + 'Asia/Hebron', + 'Asia/Ho_Chi_Minh', + 'Asia/Hong_Kong', + 'Asia/Hovd', + 'Asia/Irkutsk', + 'Asia/Jakarta', + 'Asia/Jayapura', + 'Asia/Jerusalem', + 'Asia/Kabul', + 'Asia/Kamchatka', + 'Asia/Karachi', + 'Asia/Kathmandu', + 'Asia/Khandyga', + 'Asia/Kolkata', + 'Asia/Krasnoyarsk', + 'Asia/Kuala_Lumpur', + 'Asia/Kuching', + 'Asia/Kuwait', + 'Asia/Macau', + 'Asia/Magadan', + 'Asia/Makassar', + 'Asia/Manila', + 'Asia/Muscat', + 'Asia/Nicosia', + 'Asia/Novokuznetsk', + 'Asia/Novosibirsk', + 'Asia/Omsk', + 'Asia/Oral', + 'Asia/Phnom_Penh', + 'Asia/Pontianak', + 'Asia/Pyongyang', + 'Asia/Qatar', + 'Asia/Qyzylorda', + 'Asia/Rangoon', + 'Asia/Riyadh', + 'Asia/Sakhalin', + 'Asia/Samarkand', + 'Asia/Seoul', + 'Asia/Shanghai', + 'Asia/Singapore', + 'Asia/Srednekolymsk', + 'Asia/Taipei', + 'Asia/Tashkent', + 'Asia/Tbilisi', + 'Asia/Tehran', + 'Asia/Thimphu', + 'Asia/Tokyo', + 'Asia/Ulaanbaatar', + 'Asia/Urumqi', + 'Asia/Ust-Nera', + 'Asia/Vientiane', + 'Asia/Vladivostok', + 'Asia/Yakutsk', + 'Asia/Yekaterinburg', + 'Asia/Yerevan', + 'Atlantic/Azores', + 'Atlantic/Bermuda', + 'Atlantic/Canary', + 'Atlantic/Cape_Verde', + 'Atlantic/Faroe', + 'Atlantic/Madeira', + 'Atlantic/Reykjavik', + 'Atlantic/South_Georgia', + 'Atlantic/St_Helena', + 'Atlantic/Stanley', + 'Australia/Adelaide', + 'Australia/Brisbane', + 'Australia/Broken_Hill', + 'Australia/Currie', + 'Australia/Darwin', + 'Australia/Eucla', + 'Australia/Hobart', + 'Australia/Lindeman', + 'Australia/Lord_Howe', + 'Australia/Melbourne', + 'Australia/Perth', + 'Australia/Sydney', + 'Canada/Atlantic', + 'Canada/Central', + 'Canada/Eastern', + 'Canada/Mountain', + 'Canada/Newfoundland', + 'Canada/Pacific', + 'Europe/Amsterdam', + 'Europe/Andorra', + 'Europe/Athens', + 'Europe/Belgrade', + 'Europe/Berlin', + 'Europe/Bratislava', + 'Europe/Brussels', + 'Europe/Bucharest', + 'Europe/Budapest', + 'Europe/Busingen', + 'Europe/Chisinau', + 'Europe/Copenhagen', + 'Europe/Dublin', + 'Europe/Gibraltar', + 'Europe/Guernsey', + 'Europe/Helsinki', + 'Europe/Isle_of_Man', + 'Europe/Istanbul', + 'Europe/Jersey', + 'Europe/Kaliningrad', + 'Europe/Kiev', + 'Europe/Lisbon', + 'Europe/Ljubljana', + 'Europe/London', + 'Europe/Luxembourg', + 'Europe/Madrid', + 'Europe/Malta', + 'Europe/Mariehamn', + 'Europe/Minsk', + 'Europe/Monaco', + 'Europe/Moscow', + 'Europe/Oslo', + 'Europe/Paris', + 'Europe/Podgorica', + 'Europe/Prague', + 'Europe/Riga', + 'Europe/Rome', + 'Europe/Samara', + 'Europe/San_Marino', + 'Europe/Sarajevo', + 'Europe/Simferopol', + 'Europe/Skopje', + 'Europe/Sofia', + 'Europe/Stockholm', + 'Europe/Tallinn', + 'Europe/Tirane', + 'Europe/Uzhgorod', + 'Europe/Vaduz', + 'Europe/Vatican', + 'Europe/Vienna', + 'Europe/Vilnius', + 'Europe/Volgograd', + 'Europe/Warsaw', + 'Europe/Zagreb', + 'Europe/Zaporozhye', + 'Europe/Zurich', + 'GMT', + 'Indian/Antananarivo', + 'Indian/Chagos', + 'Indian/Christmas', + 'Indian/Cocos', + 'Indian/Comoro', + 'Indian/Kerguelen', + 'Indian/Mahe', + 'Indian/Maldives', + 'Indian/Mauritius', + 'Indian/Mayotte', + 'Indian/Reunion', + 'Pacific/Apia', + 'Pacific/Auckland', + 'Pacific/Bougainville', + 'Pacific/Chatham', + 'Pacific/Chuuk', + 'Pacific/Easter', + 'Pacific/Efate', + 'Pacific/Enderbury', + 'Pacific/Fakaofo', + 'Pacific/Fiji', + 'Pacific/Funafuti', + 'Pacific/Galapagos', + 'Pacific/Gambier', + 'Pacific/Guadalcanal', + 'Pacific/Guam', + 'Pacific/Honolulu', + 'Pacific/Johnston', + 'Pacific/Kiritimati', + 'Pacific/Kosrae', + 'Pacific/Kwajalein', + 'Pacific/Majuro', + 'Pacific/Marquesas', + 'Pacific/Midway', + 'Pacific/Nauru', + 'Pacific/Niue', + 'Pacific/Norfolk', + 'Pacific/Noumea', + 'Pacific/Pago_Pago', + 'Pacific/Palau', + 'Pacific/Pitcairn', + 'Pacific/Pohnpei', + 'Pacific/Port_Moresby', + 'Pacific/Rarotonga', + 'Pacific/Saipan', + 'Pacific/Tahiti', + 'Pacific/Tarawa', + 'Pacific/Tongatapu', + 'Pacific/Wake', + 'Pacific/Wallis', + 'US/Alaska', + 'US/Arizona', + 'US/Central', + 'US/Eastern', + 'US/Hawaii', + 'US/Mountain', + 'US/Pacific', + 'UTC'] +common_timezones = LazyList( + tz for tz in common_timezones if tz in all_timezones) + +common_timezones_set = LazySet(common_timezones) |