upgrade pytz to v2016.3

This commit is contained in:
Alan Hamlett 2016-04-18 23:34:50 +02:00
parent 7a38ae9442
commit aac61a1e3c
1192 changed files with 3060 additions and 364 deletions

View File

@ -8,12 +8,10 @@ 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 = '2013d'
VERSION = OLSON_VERSION
# Version format for a patch release - only one so far.
#VERSION = OLSON_VERSION + '.2'
__version__ = OLSON_VERSION
# The IANA (nee Olson) database is updated several times a year.
OLSON_VERSION = '2016c'
VERSION = '2016.3' # Switching to pip compatible version numbering.
__version__ = VERSION
OLSEN_VERSION = OLSON_VERSION # Old releases had this misspelling
@ -112,7 +110,7 @@ def resource_exists(name):
# 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
@ -125,7 +123,7 @@ def resource_exists(name):
_tzinfo_cache = {}
def timezone(zone):
r''' Return a datetime.tzinfo implementation for the given timezone
r''' Return a datetime.tzinfo implementation for the given timezone
>>> from datetime import datetime, timedelta
>>> utc = timezone('UTC')
@ -243,13 +241,13 @@ class UTC(datetime.tzinfo):
return "UTC"
UTC = utc = UTC() # UTC is a singleton
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
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
@ -331,7 +329,7 @@ class _CountryTimezoneDict(LazyDict):
zone_tab = open_resource('zone.tab')
try:
for line in zone_tab:
line = line.decode('US-ASCII')
line = line.decode('UTF-8')
if line.startswith('#'):
continue
code, coordinates, zone = line.split(None, 4)[:3]
@ -359,7 +357,7 @@ class _CountryNameDict(LazyDict):
zone_tab = open_resource('iso3166.tab')
try:
for line in zone_tab.readlines():
line = line.decode('US-ASCII')
line = line.decode('UTF-8')
if line.startswith('#'):
continue
code, name = line.split(None, 1)
@ -601,6 +599,7 @@ all_timezones = \
'America/Eirunepe',
'America/El_Salvador',
'America/Ensenada',
'America/Fort_Nelson',
'America/Fort_Wayne',
'America/Fortaleza',
'America/Glace_Bay',
@ -718,6 +717,7 @@ all_timezones = \
'Antarctica/Rothera',
'Antarctica/South_Pole',
'Antarctica/Syowa',
'Antarctica/Troll',
'Antarctica/Vostok',
'Arctic/Longyearbyen',
'Asia/Aden',
@ -732,10 +732,12 @@ all_timezones = \
'Asia/Bahrain',
'Asia/Baku',
'Asia/Bangkok',
'Asia/Barnaul',
'Asia/Beirut',
'Asia/Bishkek',
'Asia/Brunei',
'Asia/Calcutta',
'Asia/Chita',
'Asia/Choibalsan',
'Asia/Chongqing',
'Asia/Chungking',
@ -793,6 +795,7 @@ all_timezones = \
'Asia/Seoul',
'Asia/Shanghai',
'Asia/Singapore',
'Asia/Srednekolymsk',
'Asia/Taipei',
'Asia/Tashkent',
'Asia/Tbilisi',
@ -906,6 +909,7 @@ all_timezones = \
'Etc/Zulu',
'Europe/Amsterdam',
'Europe/Andorra',
'Europe/Astrakhan',
'Europe/Athens',
'Europe/Belfast',
'Europe/Belgrade',
@ -953,6 +957,7 @@ all_timezones = \
'Europe/Tallinn',
'Europe/Tirane',
'Europe/Tiraspol',
'Europe/Ulyanovsk',
'Europe/Uzhgorod',
'Europe/Vaduz',
'Europe/Vatican',
@ -1003,6 +1008,7 @@ all_timezones = \
'PST8PDT',
'Pacific/Apia',
'Pacific/Auckland',
'Pacific/Bougainville',
'Pacific/Chatham',
'Pacific/Chuuk',
'Pacific/Easter',
@ -1175,6 +1181,7 @@ common_timezones = \
'America/Edmonton',
'America/Eirunepe',
'America/El_Salvador',
'America/Fort_Nelson',
'America/Fortaleza',
'America/Glace_Bay',
'America/Godthab',
@ -1222,7 +1229,6 @@ common_timezones = \
'America/Moncton',
'America/Monterrey',
'America/Montevideo',
'America/Montreal',
'America/Montserrat',
'America/Nassau',
'America/New_York',
@ -1247,13 +1253,11 @@ common_timezones = \
'America/Regina',
'America/Resolute',
'America/Rio_Branco',
'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',
@ -1281,8 +1285,8 @@ common_timezones = \
'Antarctica/McMurdo',
'Antarctica/Palmer',
'Antarctica/Rothera',
'Antarctica/South_Pole',
'Antarctica/Syowa',
'Antarctica/Troll',
'Antarctica/Vostok',
'Arctic/Longyearbyen',
'Asia/Aden',
@ -1296,11 +1300,12 @@ common_timezones = \
'Asia/Bahrain',
'Asia/Baku',
'Asia/Bangkok',
'Asia/Barnaul',
'Asia/Beirut',
'Asia/Bishkek',
'Asia/Brunei',
'Asia/Chita',
'Asia/Choibalsan',
'Asia/Chongqing',
'Asia/Colombo',
'Asia/Damascus',
'Asia/Dhaka',
@ -1308,7 +1313,6 @@ common_timezones = \
'Asia/Dubai',
'Asia/Dushanbe',
'Asia/Gaza',
'Asia/Harbin',
'Asia/Hebron',
'Asia/Ho_Chi_Minh',
'Asia/Hong_Kong',
@ -1320,7 +1324,6 @@ common_timezones = \
'Asia/Kabul',
'Asia/Kamchatka',
'Asia/Karachi',
'Asia/Kashgar',
'Asia/Kathmandu',
'Asia/Khandyga',
'Asia/Kolkata',
@ -1350,6 +1353,7 @@ common_timezones = \
'Asia/Seoul',
'Asia/Shanghai',
'Asia/Singapore',
'Asia/Srednekolymsk',
'Asia/Taipei',
'Asia/Tashkent',
'Asia/Tbilisi',
@ -1394,6 +1398,7 @@ common_timezones = \
'Canada/Pacific',
'Europe/Amsterdam',
'Europe/Andorra',
'Europe/Astrakhan',
'Europe/Athens',
'Europe/Belgrade',
'Europe/Berlin',
@ -1438,6 +1443,7 @@ common_timezones = \
'Europe/Stockholm',
'Europe/Tallinn',
'Europe/Tirane',
'Europe/Ulyanovsk',
'Europe/Uzhgorod',
'Europe/Vaduz',
'Europe/Vatican',
@ -1462,6 +1468,7 @@ common_timezones = \
'Indian/Reunion',
'Pacific/Apia',
'Pacific/Auckland',
'Pacific/Bougainville',
'Pacific/Chatham',
'Pacific/Chuuk',
'Pacific/Easter',

View File

@ -5,6 +5,8 @@ except ImportError:
from collections import Mapping as DictMixin
# With lazy loading, we might end up with multiple threads triggering
# it at the same time. We need a lock.
_fill_lock = RLock()
@ -28,7 +30,7 @@ class LazyDict(DictMixin):
if self.data is None:
self._fill()
finally:
_fill_lock_release()
_fill_lock.release()
return key in self.data
def __iter__(self):
@ -64,85 +66,103 @@ class LazyDict(DictMixin):
class LazyList(list):
"""List populated on first use."""
def __new__(cls, fill_iter):
_props = [
'__str__', '__repr__', '__unicode__',
'__hash__', '__sizeof__', '__cmp__',
'__lt__', '__le__', '__eq__', '__ne__', '__gt__', '__ge__',
'append', 'count', 'index', 'extend', 'insert', 'pop', 'remove',
'reverse', 'sort', '__add__', '__radd__', '__iadd__', '__mul__',
'__rmul__', '__imul__', '__contains__', '__len__', '__nonzero__',
'__getitem__', '__setitem__', '__delitem__', '__iter__',
'__reversed__', '__getslice__', '__setslice__', '__delslice__']
def __new__(cls, fill_iter=None):
if fill_iter is None:
return list()
# We need a new class as we will be dynamically messing with its
# methods.
class LazyList(list):
_fill_iter = None
pass
_props = (
'__str__', '__repr__', '__unicode__',
'__hash__', '__sizeof__', '__cmp__', '__nonzero__',
'__lt__', '__le__', '__eq__', '__ne__', '__gt__', '__ge__',
'append', 'count', 'index', 'extend', 'insert', 'pop', 'remove',
'reverse', 'sort', '__add__', '__radd__', '__iadd__', '__mul__',
'__rmul__', '__imul__', '__contains__', '__len__', '__nonzero__',
'__getitem__', '__setitem__', '__delitem__', '__iter__',
'__reversed__', '__getslice__', '__setslice__', '__delslice__')
fill_iter = [fill_iter]
def lazy(name):
def _lazy(self, *args, **kw):
if self._fill_iter is not None:
_fill_lock.acquire()
try:
if self._fill_iter is not None:
list.extend(self, self._fill_iter)
self._fill_iter = None
finally:
_fill_lock.release()
real = getattr(list, name)
setattr(self.__class__, name, real)
return real(self, *args, **kw)
_fill_lock.acquire()
try:
if len(fill_iter) > 0:
list.extend(self, fill_iter.pop())
for method_name in cls._props:
delattr(LazyList, method_name)
finally:
_fill_lock.release()
return getattr(list, name)(self, *args, **kw)
return _lazy
for name in _props:
for name in cls._props:
setattr(LazyList, name, lazy(name))
new_list = LazyList()
new_list._fill_iter = fill_iter
return new_list
# Not all versions of Python declare the same magic methods.
# Filter out properties that don't exist in this version of Python
# from the list.
LazyList._props = [prop for prop in LazyList._props if hasattr(list, prop)]
class LazySet(set):
"""Set populated on first use."""
def __new__(cls, fill_iter):
_props = (
'__str__', '__repr__', '__unicode__',
'__hash__', '__sizeof__', '__cmp__',
'__lt__', '__le__', '__eq__', '__ne__', '__gt__', '__ge__',
'__contains__', '__len__', '__nonzero__',
'__getitem__', '__setitem__', '__delitem__', '__iter__',
'__sub__', '__and__', '__xor__', '__or__',
'__rsub__', '__rand__', '__rxor__', '__ror__',
'__isub__', '__iand__', '__ixor__', '__ior__',
'add', 'clear', 'copy', 'difference', 'difference_update',
'discard', 'intersection', 'intersection_update', 'isdisjoint',
'issubset', 'issuperset', 'pop', 'remove',
'symmetric_difference', 'symmetric_difference_update',
'union', 'update')
def __new__(cls, fill_iter=None):
if fill_iter is None:
return set()
class LazySet(set):
_fill_iter = None
pass
_props = (
'__str__', '__repr__', '__unicode__',
'__hash__', '__sizeof__', '__cmp__', '__nonzero__',
'__lt__', '__le__', '__eq__', '__ne__', '__gt__', '__ge__',
'__contains__', '__len__', '__nonzero__',
'__getitem__', '__setitem__', '__delitem__', '__iter__',
'__sub__', '__and__', '__xor__', '__or__',
'__rsub__', '__rand__', '__rxor__', '__ror__',
'__isub__', '__iand__', '__ixor__', '__ior__',
'add', 'clear', 'copy', 'difference', 'difference_update',
'discard', 'intersection', 'intersection_update', 'isdisjoint',
'issubset', 'issuperset', 'pop', 'remove',
'symmetric_difference', 'symmetric_difference_update',
'union', 'update')
fill_iter = [fill_iter]
def lazy(name):
def _lazy(self, *args, **kw):
if self._fill_iter is not None:
_fill_lock.acquire()
try:
if self._fill_iter is not None:
for i in self._fill_iter:
set.add(self, i)
self._fill_iter = None
finally:
_fill_lock.release()
real = getattr(set, name)
setattr(self.__class__, name, real)
return real(self, *args, **kw)
_fill_lock.acquire()
try:
if len(fill_iter) > 0:
for i in fill_iter.pop():
set.add(self, i)
for method_name in cls._props:
delattr(LazySet, method_name)
finally:
_fill_lock.release()
return getattr(set, name)(self, *args, **kw)
return _lazy
for name in _props:
for name in cls._props:
setattr(LazySet, name, lazy(name))
new_set = LazySet()
new_set._fill_iter = fill_iter
return new_set
# Not all versions of Python declare the same magic methods.
# Filter out properties that don't exist in this version of Python
# from the list.
LazySet._props = [prop for prop in LazySet._props if hasattr(set, prop)]

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@ -0,0 +1,34 @@
# -*- coding: ascii -*-
from doctest import DocFileSuite
import unittest, os.path, sys
THIS_DIR = os.path.dirname(__file__)
README = os.path.join(THIS_DIR, os.pardir, os.pardir, 'README.txt')
class DocumentationTestCase(unittest.TestCase):
def test_readme_encoding(self):
'''Confirm the README.txt is pure ASCII.'''
f = open(README, 'rb')
try:
f.read().decode('US-ASCII')
finally:
f.close()
def test_suite():
"For the Z3 test runner"
return unittest.TestSuite((
DocumentationTestCase('test_readme_encoding'),
DocFileSuite(os.path.join(os.pardir, os.pardir, 'README.txt'))))
if __name__ == '__main__':
sys.path.insert(0, os.path.abspath(os.path.join(
THIS_DIR, os.pardir, os.pardir
)))
unittest.main(defaultTest='test_suite')

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@ -0,0 +1,313 @@
from operator import *
import os.path
import sys
import unittest
import warnings
if __name__ == '__main__':
# Only munge path if invoked as a script. Testrunners should have setup
# the paths already
sys.path.insert(0, os.path.abspath(os.path.join(os.pardir, os.pardir)))
from pytz.lazy import LazyList, LazySet
class LazyListTestCase(unittest.TestCase):
initial_data = [3,2,1]
def setUp(self):
self.base = [3, 2, 1]
self.lesser = [2, 1, 0]
self.greater = [4, 3, 2]
self.lazy = LazyList(iter(list(self.base)))
def test_unary_ops(self):
unary_ops = [str, repr, len, bool, not_]
try:
unary_ops.append(unicode)
except NameError:
pass # unicode no longer exists in Python 3.
for op in unary_ops:
self.assertEqual(
op(self.lazy),
op(self.base), str(op))
def test_binary_ops(self):
binary_ops = [eq, ge, gt, le, lt, ne, add, concat]
try:
binary_ops.append(cmp)
except NameError:
pass # cmp no longer exists in Python 3.
for op in binary_ops:
self.assertEqual(
op(self.lazy, self.lazy),
op(self.base, self.base), str(op))
for other in [self.base, self.lesser, self.greater]:
self.assertEqual(
op(self.lazy, other),
op(self.base, other), '%s %s' % (op, other))
self.assertEqual(
op(other, self.lazy),
op(other, self.base), '%s %s' % (op, other))
# Multiplication
self.assertEqual(self.lazy * 3, self.base * 3)
self.assertEqual(3 * self.lazy, 3 * self.base)
# Contains
self.assertTrue(2 in self.lazy)
self.assertFalse(42 in self.lazy)
def test_iadd(self):
self.lazy += [1]
self.base += [1]
self.assertEqual(self.lazy, self.base)
def test_bool(self):
self.assertTrue(bool(self.lazy))
self.assertFalse(bool(LazyList()))
self.assertFalse(bool(LazyList(iter([]))))
def test_hash(self):
self.assertRaises(TypeError, hash, self.lazy)
def test_isinstance(self):
self.assertTrue(isinstance(self.lazy, list))
self.assertFalse(isinstance(self.lazy, tuple))
def test_callable(self):
try:
callable
except NameError:
return # No longer exists with Python 3.
self.assertFalse(callable(self.lazy))
def test_append(self):
self.base.append('extra')
self.lazy.append('extra')
self.assertEqual(self.lazy, self.base)
def test_count(self):
self.assertEqual(self.lazy.count(2), 1)
def test_index(self):
self.assertEqual(self.lazy.index(2), 1)
def test_extend(self):
self.base.extend([6, 7])
self.lazy.extend([6, 7])
self.assertEqual(self.lazy, self.base)
def test_insert(self):
self.base.insert(0, 'ping')
self.lazy.insert(0, 'ping')
self.assertEqual(self.lazy, self.base)
def test_pop(self):
self.assertEqual(self.lazy.pop(), self.base.pop())
self.assertEqual(self.lazy, self.base)
def test_remove(self):
self.base.remove(2)
self.lazy.remove(2)
self.assertEqual(self.lazy, self.base)
def test_reverse(self):
self.base.reverse()
self.lazy.reverse()
self.assertEqual(self.lazy, self.base)
def test_reversed(self):
self.assertEqual(list(reversed(self.lazy)), list(reversed(self.base)))
def test_sort(self):
self.base.sort()
self.assertNotEqual(self.lazy, self.base, 'Test data already sorted')
self.lazy.sort()
self.assertEqual(self.lazy, self.base)
def test_sorted(self):
self.assertEqual(sorted(self.lazy), sorted(self.base))
def test_getitem(self):
for idx in range(-len(self.base), len(self.base)):
self.assertEqual(self.lazy[idx], self.base[idx])
def test_setitem(self):
for idx in range(-len(self.base), len(self.base)):
self.base[idx] = idx + 1000
self.assertNotEqual(self.lazy, self.base)
self.lazy[idx] = idx + 1000
self.assertEqual(self.lazy, self.base)
def test_delitem(self):
del self.base[0]
self.assertNotEqual(self.lazy, self.base)
del self.lazy[0]
self.assertEqual(self.lazy, self.base)
del self.base[-2]
self.assertNotEqual(self.lazy, self.base)
del self.lazy[-2]
self.assertEqual(self.lazy, self.base)
def test_iter(self):
self.assertEqual(list(iter(self.lazy)), list(iter(self.base)))
def test_getslice(self):
for i in range(-len(self.base), len(self.base)):
for j in range(-len(self.base), len(self.base)):
for step in [-1, 1]:
self.assertEqual(self.lazy[i:j:step], self.base[i:j:step])
def test_setslice(self):
for i in range(-len(self.base), len(self.base)):
for j in range(-len(self.base), len(self.base)):
for step in [-1, 1]:
replacement = range(0, len(self.base[i:j:step]))
self.base[i:j:step] = replacement
self.lazy[i:j:step] = replacement
self.assertEqual(self.lazy, self.base)
def test_delslice(self):
del self.base[0:1]
del self.lazy[0:1]
self.assertEqual(self.lazy, self.base)
del self.base[-1:1:-1]
del self.lazy[-1:1:-1]
self.assertEqual(self.lazy, self.base)
class LazySetTestCase(unittest.TestCase):
initial_data = set([3,2,1])
def setUp(self):
self.base = set([3, 2, 1])
self.lazy = LazySet(iter(set(self.base)))
def test_unary_ops(self):
# These ops just need to work.
unary_ops = [str, repr]
try:
unary_ops.append(unicode)
except NameError:
pass # unicode no longer exists in Python 3.
for op in unary_ops:
op(self.lazy) # These ops just need to work.
# These ops should return identical values as a real set.
unary_ops = [len, bool, not_]
for op in unary_ops:
self.assertEqual(
op(self.lazy),
op(self.base), '%s(lazy) == %r' % (op, op(self.lazy)))
def test_binary_ops(self):
binary_ops = [eq, ge, gt, le, lt, ne, sub, and_, or_, xor]
try:
binary_ops.append(cmp)
except NameError:
pass # cmp no longer exists in Python 3.
for op in binary_ops:
self.assertEqual(
op(self.lazy, self.lazy),
op(self.base, self.base), str(op))
self.assertEqual(
op(self.lazy, self.base),
op(self.base, self.base), str(op))
self.assertEqual(
op(self.base, self.lazy),
op(self.base, self.base), str(op))
# Contains
self.assertTrue(2 in self.lazy)
self.assertFalse(42 in self.lazy)
def test_iops(self):
try:
iops = [isub, iand, ior, ixor]
except NameError:
return # Don't exist in older Python versions.
for op in iops:
# Mutating operators, so make fresh copies.
lazy = LazySet(self.base)
base = self.base.copy()
op(lazy, set([1]))
op(base, set([1]))
self.assertEqual(lazy, base, str(op))
def test_bool(self):
self.assertTrue(bool(self.lazy))
self.assertFalse(bool(LazySet()))
self.assertFalse(bool(LazySet(iter([]))))
def test_hash(self):
self.assertRaises(TypeError, hash, self.lazy)
def test_isinstance(self):
self.assertTrue(isinstance(self.lazy, set))
def test_callable(self):
try:
callable
except NameError:
return # No longer exists with Python 3.
self.assertFalse(callable(self.lazy))
def test_add(self):
self.base.add('extra')
self.lazy.add('extra')
self.assertEqual(self.lazy, self.base)
def test_copy(self):
self.assertEqual(self.lazy.copy(), self.base)
def test_method_ops(self):
ops = [
'difference', 'intersection', 'isdisjoint',
'issubset', 'issuperset', 'symmetric_difference', 'union',
'difference_update', 'intersection_update',
'symmetric_difference_update', 'update']
for op in ops:
if not hasattr(set, op):
continue # Not in this version of Python.
# Make a copy, as some of the ops are mutating.
lazy = LazySet(set(self.base))
base = set(self.base)
self.assertEqual(
getattr(self.lazy, op)(set([1])),
getattr(self.base, op)(set([1])), op)
self.assertEqual(self.lazy, self.base, op)
def test_discard(self):
self.base.discard(1)
self.assertNotEqual(self.lazy, self.base)
self.lazy.discard(1)
self.assertEqual(self.lazy, self.base)
def test_pop(self):
self.assertEqual(self.lazy.pop(), self.base.pop())
self.assertEqual(self.lazy, self.base)
def test_remove(self):
self.base.remove(2)
self.lazy.remove(2)
self.assertEqual(self.lazy, self.base)
def test_clear(self):
self.lazy.clear()
self.assertEqual(self.lazy, set())
if __name__ == '__main__':
warnings.simplefilter("error") # Warnings should be fatal in tests.
unittest.main()

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@ -0,0 +1,837 @@
# -*- coding: ascii -*-
import sys, os, os.path
import unittest, doctest
try:
import cPickle as pickle
except ImportError:
import pickle
from datetime import datetime, time, timedelta, tzinfo
import warnings
if __name__ == '__main__':
# Only munge path if invoked as a script. Testrunners should have setup
# the paths already
sys.path.insert(0, os.path.abspath(os.path.join(os.pardir, os.pardir)))
import pytz
from pytz import reference
from pytz.tzfile import _byte_string
from pytz.tzinfo import DstTzInfo, StaticTzInfo
# I test for expected version to ensure the correct version of pytz is
# actually being tested.
EXPECTED_VERSION='2016.3'
EXPECTED_OLSON_VERSION='2016c'
fmt = '%Y-%m-%d %H:%M:%S %Z%z'
NOTIME = timedelta(0)
# GMT is a tzinfo.StaticTzInfo--the class we primarily want to test--while
# UTC is reference implementation. They both have the same timezone meaning.
UTC = pytz.timezone('UTC')
GMT = pytz.timezone('GMT')
assert isinstance(GMT, StaticTzInfo), 'GMT is no longer a StaticTzInfo'
def prettydt(dt):
"""datetime as a string using a known format.
We don't use strftime as it doesn't handle years earlier than 1900
per http://bugs.python.org/issue1777412
"""
if dt.utcoffset() >= timedelta(0):
offset = '+%s' % (dt.utcoffset(),)
else:
offset = '-%s' % (-1 * dt.utcoffset(),)
return '%04d-%02d-%02d %02d:%02d:%02d %s %s' % (
dt.year, dt.month, dt.day,
dt.hour, dt.minute, dt.second,
dt.tzname(), offset)
try:
unicode
except NameError:
# Python 3.x doesn't have unicode(), making writing code
# for Python 2.3 and Python 3.x a pain.
unicode = str
class BasicTest(unittest.TestCase):
def testVersion(self):
# Ensuring the correct version of pytz has been loaded
self.assertEqual(EXPECTED_VERSION, pytz.__version__,
'Incorrect pytz version loaded. Import path is stuffed '
'or this test needs updating. (Wanted %s, got %s)'
% (EXPECTED_VERSION, pytz.__version__))
self.assertEqual(EXPECTED_OLSON_VERSION, pytz.OLSON_VERSION,
'Incorrect pytz version loaded. Import path is stuffed '
'or this test needs updating. (Wanted %s, got %s)'
% (EXPECTED_OLSON_VERSION, pytz.OLSON_VERSION))
def testGMT(self):
now = datetime.now(tz=GMT)
self.assertTrue(now.utcoffset() == NOTIME)
self.assertTrue(now.dst() == NOTIME)
self.assertTrue(now.timetuple() == now.utctimetuple())
self.assertTrue(now==now.replace(tzinfo=UTC))
def testReferenceUTC(self):
now = datetime.now(tz=UTC)
self.assertTrue(now.utcoffset() == NOTIME)
self.assertTrue(now.dst() == NOTIME)
self.assertTrue(now.timetuple() == now.utctimetuple())
def testUnknownOffsets(self):
# This tzinfo behavior is required to make
# datetime.time.{utcoffset, dst, tzname} work as documented.
dst_tz = pytz.timezone('US/Eastern')
# This information is not known when we don't have a date,
# so return None per API.
self.assertTrue(dst_tz.utcoffset(None) is None)
self.assertTrue(dst_tz.dst(None) is None)
# We don't know the abbreviation, but this is still a valid
# tzname per the Python documentation.
self.assertEqual(dst_tz.tzname(None), 'US/Eastern')
def clearCache(self):
pytz._tzinfo_cache.clear()
def testUnicodeTimezone(self):
# We need to ensure that cold lookups work for both Unicode
# and traditional strings, and that the desired singleton is
# returned.
self.clearCache()
eastern = pytz.timezone(unicode('US/Eastern'))
self.assertTrue(eastern is pytz.timezone('US/Eastern'))
self.clearCache()
eastern = pytz.timezone('US/Eastern')
self.assertTrue(eastern is pytz.timezone(unicode('US/Eastern')))
class PicklingTest(unittest.TestCase):
def _roundtrip_tzinfo(self, tz):
p = pickle.dumps(tz)
unpickled_tz = pickle.loads(p)
self.assertTrue(tz is unpickled_tz, '%s did not roundtrip' % tz.zone)
def _roundtrip_datetime(self, dt):
# Ensure that the tzinfo attached to a datetime instance
# is identical to the one returned. This is important for
# DST timezones, as some state is stored in the tzinfo.
tz = dt.tzinfo
p = pickle.dumps(dt)
unpickled_dt = pickle.loads(p)
unpickled_tz = unpickled_dt.tzinfo
self.assertTrue(tz is unpickled_tz, '%s did not roundtrip' % tz.zone)
def testDst(self):
tz = pytz.timezone('Europe/Amsterdam')
dt = datetime(2004, 2, 1, 0, 0, 0)
for localized_tz in tz._tzinfos.values():
self._roundtrip_tzinfo(localized_tz)
self._roundtrip_datetime(dt.replace(tzinfo=localized_tz))
def testRoundtrip(self):
dt = datetime(2004, 2, 1, 0, 0, 0)
for zone in pytz.all_timezones:
tz = pytz.timezone(zone)
self._roundtrip_tzinfo(tz)
def testDatabaseFixes(self):
# Hack the pickle to make it refer to a timezone abbreviation
# that does not match anything. The unpickler should be able
# to repair this case
tz = pytz.timezone('Australia/Melbourne')
p = pickle.dumps(tz)
tzname = tz._tzname
hacked_p = p.replace(_byte_string(tzname),
_byte_string('?'*len(tzname)))
self.assertNotEqual(p, hacked_p)
unpickled_tz = pickle.loads(hacked_p)
self.assertTrue(tz is unpickled_tz)
# Simulate a database correction. In this case, the incorrect
# data will continue to be used.
p = pickle.dumps(tz)
new_utcoffset = tz._utcoffset.seconds + 42
# Python 3 introduced a new pickle protocol where numbers are stored in
# hexadecimal representation. Here we extract the pickle
# representation of the number for the current Python version.
old_pickle_pattern = pickle.dumps(tz._utcoffset.seconds)[3:-1]
new_pickle_pattern = pickle.dumps(new_utcoffset)[3:-1]
hacked_p = p.replace(old_pickle_pattern, new_pickle_pattern)
self.assertNotEqual(p, hacked_p)
unpickled_tz = pickle.loads(hacked_p)
self.assertEqual(unpickled_tz._utcoffset.seconds, new_utcoffset)
self.assertTrue(tz is not unpickled_tz)
def testOldPickles(self):
# Ensure that applications serializing pytz instances as pickles
# have no troubles upgrading to a new pytz release. These pickles
# where created with pytz2006j
east1 = pickle.loads(_byte_string(
"cpytz\n_p\np1\n(S'US/Eastern'\np2\nI-18000\n"
"I0\nS'EST'\np3\ntRp4\n."
))
east2 = pytz.timezone('US/Eastern').localize(
datetime(2006, 1, 1)).tzinfo
self.assertTrue(east1 is east2)
# Confirm changes in name munging between 2006j and 2007c cause
# no problems.
pap1 = pickle.loads(_byte_string(
"cpytz\n_p\np1\n(S'America/Port_minus_au_minus_Prince'"
"\np2\nI-17340\nI0\nS'PPMT'\np3\ntRp4\n."))
pap2 = pytz.timezone('America/Port-au-Prince').localize(
datetime(1910, 1, 1)).tzinfo
self.assertTrue(pap1 is pap2)
gmt1 = pickle.loads(_byte_string(
"cpytz\n_p\np1\n(S'Etc/GMT_plus_10'\np2\ntRp3\n."))
gmt2 = pytz.timezone('Etc/GMT+10')
self.assertTrue(gmt1 is gmt2)
class USEasternDSTStartTestCase(unittest.TestCase):
tzinfo = pytz.timezone('US/Eastern')
# 24 hours before DST changeover
transition_time = datetime(2002, 4, 7, 7, 0, 0, tzinfo=UTC)
# Increase for 'flexible' DST transitions due to 1 minute granularity
# of Python's datetime library
instant = timedelta(seconds=1)
# before transition
before = {
'tzname': 'EST',
'utcoffset': timedelta(hours = -5),
'dst': timedelta(hours = 0),
}
# after transition
after = {
'tzname': 'EDT',
'utcoffset': timedelta(hours = -4),
'dst': timedelta(hours = 1),
}
def _test_tzname(self, utc_dt, wanted):
tzname = wanted['tzname']
dt = utc_dt.astimezone(self.tzinfo)
self.assertEqual(dt.tzname(), tzname,
'Expected %s as tzname for %s. Got %s' % (
tzname, str(utc_dt), dt.tzname()
)
)
def _test_utcoffset(self, utc_dt, wanted):
utcoffset = wanted['utcoffset']
dt = utc_dt.astimezone(self.tzinfo)
self.assertEqual(
dt.utcoffset(), wanted['utcoffset'],
'Expected %s as utcoffset for %s. Got %s' % (
utcoffset, utc_dt, dt.utcoffset()
)
)
def _test_dst(self, utc_dt, wanted):
dst = wanted['dst']
dt = utc_dt.astimezone(self.tzinfo)
self.assertEqual(dt.dst(),dst,
'Expected %s as dst for %s. Got %s' % (
dst, utc_dt, dt.dst()
)
)
def test_arithmetic(self):
utc_dt = self.transition_time
for days in range(-420, 720, 20):
delta = timedelta(days=days)
# Make sure we can get back where we started
dt = utc_dt.astimezone(self.tzinfo)
dt2 = dt + delta
dt2 = dt2 - delta
self.assertEqual(dt, dt2)
# Make sure arithmetic crossing DST boundaries ends
# up in the correct timezone after normalization
utc_plus_delta = (utc_dt + delta).astimezone(self.tzinfo)
local_plus_delta = self.tzinfo.normalize(dt + delta)
self.assertEqual(
prettydt(utc_plus_delta),
prettydt(local_plus_delta),
'Incorrect result for delta==%d days. Wanted %r. Got %r'%(
days,
prettydt(utc_plus_delta),
prettydt(local_plus_delta),
)
)
def _test_all(self, utc_dt, wanted):
self._test_utcoffset(utc_dt, wanted)
self._test_tzname(utc_dt, wanted)
self._test_dst(utc_dt, wanted)
def testDayBefore(self):
self._test_all(
self.transition_time - timedelta(days=1), self.before
)
def testTwoHoursBefore(self):
self._test_all(
self.transition_time - timedelta(hours=2), self.before
)
def testHourBefore(self):
self._test_all(
self.transition_time - timedelta(hours=1), self.before
)
def testInstantBefore(self):
self._test_all(
self.transition_time - self.instant, self.before
)
def testTransition(self):
self._test_all(
self.transition_time, self.after
)
def testInstantAfter(self):
self._test_all(
self.transition_time + self.instant, self.after
)
def testHourAfter(self):
self._test_all(
self.transition_time + timedelta(hours=1), self.after
)
def testTwoHoursAfter(self):
self._test_all(
self.transition_time + timedelta(hours=1), self.after
)
def testDayAfter(self):
self._test_all(
self.transition_time + timedelta(days=1), self.after
)
class USEasternDSTEndTestCase(USEasternDSTStartTestCase):
tzinfo = pytz.timezone('US/Eastern')
transition_time = datetime(2002, 10, 27, 6, 0, 0, tzinfo=UTC)
before = {
'tzname': 'EDT',
'utcoffset': timedelta(hours = -4),
'dst': timedelta(hours = 1),
}
after = {
'tzname': 'EST',
'utcoffset': timedelta(hours = -5),
'dst': timedelta(hours = 0),
}
class USEasternEPTStartTestCase(USEasternDSTStartTestCase):
transition_time = datetime(1945, 8, 14, 23, 0, 0, tzinfo=UTC)
before = {
'tzname': 'EWT',
'utcoffset': timedelta(hours = -4),
'dst': timedelta(hours = 1),
}
after = {
'tzname': 'EPT',
'utcoffset': timedelta(hours = -4),
'dst': timedelta(hours = 1),
}
class USEasternEPTEndTestCase(USEasternDSTStartTestCase):
transition_time = datetime(1945, 9, 30, 6, 0, 0, tzinfo=UTC)
before = {
'tzname': 'EPT',
'utcoffset': timedelta(hours = -4),
'dst': timedelta(hours = 1),
}
after = {
'tzname': 'EST',
'utcoffset': timedelta(hours = -5),
'dst': timedelta(hours = 0),
}
class WarsawWMTEndTestCase(USEasternDSTStartTestCase):
# In 1915, Warsaw changed from Warsaw to Central European time.
# This involved the clocks being set backwards, causing a end-of-DST
# like situation without DST being involved.
tzinfo = pytz.timezone('Europe/Warsaw')
transition_time = datetime(1915, 8, 4, 22, 36, 0, tzinfo=UTC)
before = {
'tzname': 'WMT',
'utcoffset': timedelta(hours=1, minutes=24),
'dst': timedelta(0),
}
after = {
'tzname': 'CET',
'utcoffset': timedelta(hours=1),
'dst': timedelta(0),
}
class VilniusWMTEndTestCase(USEasternDSTStartTestCase):
# At the end of 1916, Vilnius changed timezones putting its clock
# forward by 11 minutes 35 seconds. Neither timezone was in DST mode.
tzinfo = pytz.timezone('Europe/Vilnius')
instant = timedelta(seconds=31)
transition_time = datetime(1916, 12, 31, 22, 36, 00, tzinfo=UTC)
before = {
'tzname': 'WMT',
'utcoffset': timedelta(hours=1, minutes=24),
'dst': timedelta(0),
}
after = {
'tzname': 'KMT',
'utcoffset': timedelta(hours=1, minutes=36), # Really 1:35:36
'dst': timedelta(0),
}
class VilniusCESTStartTestCase(USEasternDSTStartTestCase):
# In 1941, Vilnius changed from MSG to CEST, switching to summer
# time while simultaneously reducing its UTC offset by two hours,
# causing the clocks to go backwards for this summer time
# switchover.
tzinfo = pytz.timezone('Europe/Vilnius')
transition_time = datetime(1941, 6, 23, 21, 00, 00, tzinfo=UTC)
before = {
'tzname': 'MSK',
'utcoffset': timedelta(hours=3),
'dst': timedelta(0),
}
after = {
'tzname': 'CEST',
'utcoffset': timedelta(hours=2),
'dst': timedelta(hours=1),
}
class LondonHistoryStartTestCase(USEasternDSTStartTestCase):
# The first known timezone transition in London was in 1847 when
# clocks where synchronized to GMT. However, we currently only
# understand v1 format tzfile(5) files which does handle years
# this far in the past, so our earliest known transition is in
# 1916.
tzinfo = pytz.timezone('Europe/London')
# transition_time = datetime(1847, 12, 1, 1, 15, 00, tzinfo=UTC)
# before = {
# 'tzname': 'LMT',
# 'utcoffset': timedelta(minutes=-75),
# 'dst': timedelta(0),
# }
# after = {
# 'tzname': 'GMT',
# 'utcoffset': timedelta(0),
# 'dst': timedelta(0),
# }
transition_time = datetime(1916, 5, 21, 2, 00, 00, tzinfo=UTC)
before = {
'tzname': 'GMT',
'utcoffset': timedelta(0),
'dst': timedelta(0),
}
after = {
'tzname': 'BST',
'utcoffset': timedelta(hours=1),
'dst': timedelta(hours=1),
}
class LondonHistoryEndTestCase(USEasternDSTStartTestCase):
# Timezone switchovers are projected into the future, even
# though no official statements exist or could be believed even
# if they did exist. We currently only check the last known
# transition in 2037, as we are still using v1 format tzfile(5)
# files.
tzinfo = pytz.timezone('Europe/London')
# transition_time = datetime(2499, 10, 25, 1, 0, 0, tzinfo=UTC)
transition_time = datetime(2037, 10, 25, 1, 0, 0, tzinfo=UTC)
before = {
'tzname': 'BST',
'utcoffset': timedelta(hours=1),
'dst': timedelta(hours=1),
}
after = {
'tzname': 'GMT',
'utcoffset': timedelta(0),
'dst': timedelta(0),
}
class NoumeaHistoryStartTestCase(USEasternDSTStartTestCase):
# Noumea adopted a whole hour offset in 1912. Previously
# it was 11 hours, 5 minutes and 48 seconds off UTC. However,
# due to limitations of the Python datetime library, we need
# to round that to 11 hours 6 minutes.
tzinfo = pytz.timezone('Pacific/Noumea')
transition_time = datetime(1912, 1, 12, 12, 54, 12, tzinfo=UTC)
before = {
'tzname': 'LMT',
'utcoffset': timedelta(hours=11, minutes=6),
'dst': timedelta(0),
}
after = {
'tzname': 'NCT',
'utcoffset': timedelta(hours=11),
'dst': timedelta(0),
}
class NoumeaDSTEndTestCase(USEasternDSTStartTestCase):
# Noumea dropped DST in 1997.
tzinfo = pytz.timezone('Pacific/Noumea')
transition_time = datetime(1997, 3, 1, 15, 00, 00, tzinfo=UTC)
before = {
'tzname': 'NCST',
'utcoffset': timedelta(hours=12),
'dst': timedelta(hours=1),
}
after = {
'tzname': 'NCT',
'utcoffset': timedelta(hours=11),
'dst': timedelta(0),
}
class NoumeaNoMoreDSTTestCase(NoumeaDSTEndTestCase):
# Noumea dropped DST in 1997. Here we test that it stops occuring.
transition_time = (
NoumeaDSTEndTestCase.transition_time + timedelta(days=365*10))
before = NoumeaDSTEndTestCase.after
after = NoumeaDSTEndTestCase.after
class TahitiTestCase(USEasternDSTStartTestCase):
# Tahiti has had a single transition in its history.
tzinfo = pytz.timezone('Pacific/Tahiti')
transition_time = datetime(1912, 10, 1, 9, 58, 16, tzinfo=UTC)
before = {
'tzname': 'LMT',
'utcoffset': timedelta(hours=-9, minutes=-58),
'dst': timedelta(0),
}
after = {
'tzname': 'TAHT',
'utcoffset': timedelta(hours=-10),
'dst': timedelta(0),
}
class SamoaInternationalDateLineChange(USEasternDSTStartTestCase):
# At the end of 2011, Samoa will switch from being east of the
# international dateline to the west. There will be no Dec 30th
# 2011 and it will switch from UTC-10 to UTC+14.
tzinfo = pytz.timezone('Pacific/Apia')
transition_time = datetime(2011, 12, 30, 10, 0, 0, tzinfo=UTC)
before = {
'tzname': 'SDT',
'utcoffset': timedelta(hours=-10),
'dst': timedelta(hours=1),
}
after = {
'tzname': 'WSDT',
'utcoffset': timedelta(hours=14),
'dst': timedelta(hours=1),
}
class ReferenceUSEasternDSTStartTestCase(USEasternDSTStartTestCase):
tzinfo = reference.Eastern
def test_arithmetic(self):
# Reference implementation cannot handle this
pass
class ReferenceUSEasternDSTEndTestCase(USEasternDSTEndTestCase):
tzinfo = reference.Eastern
def testHourBefore(self):
# Python's datetime library has a bug, where the hour before
# a daylight saving transition is one hour out. For example,
# at the end of US/Eastern daylight saving time, 01:00 EST
# occurs twice (once at 05:00 UTC and once at 06:00 UTC),
# whereas the first should actually be 01:00 EDT.
# Note that this bug is by design - by accepting this ambiguity
# for one hour one hour per year, an is_dst flag on datetime.time
# became unnecessary.
self._test_all(
self.transition_time - timedelta(hours=1), self.after
)
def testInstantBefore(self):
self._test_all(
self.transition_time - timedelta(seconds=1), self.after
)
def test_arithmetic(self):
# Reference implementation cannot handle this
pass
class LocalTestCase(unittest.TestCase):
def testLocalize(self):
loc_tz = pytz.timezone('Europe/Amsterdam')
loc_time = loc_tz.localize(datetime(1930, 5, 10, 0, 0, 0))
# Actually +00:19:32, but Python datetime rounds this
self.assertEqual(loc_time.strftime('%Z%z'), 'AMT+0020')
loc_time = loc_tz.localize(datetime(1930, 5, 20, 0, 0, 0))
# Actually +00:19:32, but Python datetime rounds this
self.assertEqual(loc_time.strftime('%Z%z'), 'NST+0120')
loc_time = loc_tz.localize(datetime(1940, 5, 10, 0, 0, 0))
self.assertEqual(loc_time.strftime('%Z%z'), 'NET+0020')
loc_time = loc_tz.localize(datetime(1940, 5, 20, 0, 0, 0))
self.assertEqual(loc_time.strftime('%Z%z'), 'CEST+0200')
loc_time = loc_tz.localize(datetime(2004, 2, 1, 0, 0, 0))
self.assertEqual(loc_time.strftime('%Z%z'), 'CET+0100')
loc_time = loc_tz.localize(datetime(2004, 4, 1, 0, 0, 0))
self.assertEqual(loc_time.strftime('%Z%z'), 'CEST+0200')
tz = pytz.timezone('Europe/Amsterdam')
loc_time = loc_tz.localize(datetime(1943, 3, 29, 1, 59, 59))
self.assertEqual(loc_time.strftime('%Z%z'), 'CET+0100')
# Switch to US
loc_tz = pytz.timezone('US/Eastern')
# End of DST ambiguity check
loc_time = loc_tz.localize(datetime(1918, 10, 27, 1, 59, 59), is_dst=1)
self.assertEqual(loc_time.strftime('%Z%z'), 'EDT-0400')
loc_time = loc_tz.localize(datetime(1918, 10, 27, 1, 59, 59), is_dst=0)
self.assertEqual(loc_time.strftime('%Z%z'), 'EST-0500')
self.assertRaises(pytz.AmbiguousTimeError,
loc_tz.localize, datetime(1918, 10, 27, 1, 59, 59), is_dst=None
)
# Start of DST non-existent times
loc_time = loc_tz.localize(datetime(1918, 3, 31, 2, 0, 0), is_dst=0)
self.assertEqual(loc_time.strftime('%Z%z'), 'EST-0500')
loc_time = loc_tz.localize(datetime(1918, 3, 31, 2, 0, 0), is_dst=1)
self.assertEqual(loc_time.strftime('%Z%z'), 'EDT-0400')
self.assertRaises(pytz.NonExistentTimeError,
loc_tz.localize, datetime(1918, 3, 31, 2, 0, 0), is_dst=None
)
# Weird changes - war time and peace time both is_dst==True
loc_time = loc_tz.localize(datetime(1942, 2, 9, 3, 0, 0))
self.assertEqual(loc_time.strftime('%Z%z'), 'EWT-0400')
loc_time = loc_tz.localize(datetime(1945, 8, 14, 19, 0, 0))
self.assertEqual(loc_time.strftime('%Z%z'), 'EPT-0400')
loc_time = loc_tz.localize(datetime(1945, 9, 30, 1, 0, 0), is_dst=1)
self.assertEqual(loc_time.strftime('%Z%z'), 'EPT-0400')
loc_time = loc_tz.localize(datetime(1945, 9, 30, 1, 0, 0), is_dst=0)
self.assertEqual(loc_time.strftime('%Z%z'), 'EST-0500')
# Weird changes - ambiguous time (end-of-DST like) but is_dst==False
for zonename, ambiguous_naive, expected in [
('Europe/Warsaw', datetime(1915, 8, 4, 23, 59, 59),
['1915-08-04 23:59:59 WMT+0124',
'1915-08-04 23:59:59 CET+0100']),
('Europe/Moscow', datetime(2014, 10, 26, 1, 30),
['2014-10-26 01:30:00 MSK+0400',
'2014-10-26 01:30:00 MSK+0300'])]:
loc_tz = pytz.timezone(zonename)
self.assertRaises(pytz.AmbiguousTimeError,
loc_tz.localize, ambiguous_naive, is_dst=None
)
# Also test non-boolean is_dst in the weird case
for dst in [True, timedelta(1), False, timedelta(0)]:
loc_time = loc_tz.localize(ambiguous_naive, is_dst=dst)
self.assertEqual(loc_time.strftime(fmt), expected[not dst])
def testNormalize(self):
tz = pytz.timezone('US/Eastern')
dt = datetime(2004, 4, 4, 7, 0, 0, tzinfo=UTC).astimezone(tz)
dt2 = dt - timedelta(minutes=10)
self.assertEqual(
dt2.strftime('%Y-%m-%d %H:%M:%S %Z%z'),
'2004-04-04 02:50:00 EDT-0400'
)
dt2 = tz.normalize(dt2)
self.assertEqual(
dt2.strftime('%Y-%m-%d %H:%M:%S %Z%z'),
'2004-04-04 01:50:00 EST-0500'
)
def testPartialMinuteOffsets(self):
# utcoffset in Amsterdam was not a whole minute until 1937
# However, we fudge this by rounding them, as the Python
# datetime library
tz = pytz.timezone('Europe/Amsterdam')
utc_dt = datetime(1914, 1, 1, 13, 40, 28, tzinfo=UTC) # correct
utc_dt = utc_dt.replace(second=0) # But we need to fudge it
loc_dt = utc_dt.astimezone(tz)
self.assertEqual(
loc_dt.strftime('%Y-%m-%d %H:%M:%S %Z%z'),
'1914-01-01 14:00:00 AMT+0020'
)
# And get back...
utc_dt = loc_dt.astimezone(UTC)
self.assertEqual(
utc_dt.strftime('%Y-%m-%d %H:%M:%S %Z%z'),
'1914-01-01 13:40:00 UTC+0000'
)
def no_testCreateLocaltime(self):
# It would be nice if this worked, but it doesn't.
tz = pytz.timezone('Europe/Amsterdam')
dt = datetime(2004, 10, 31, 2, 0, 0, tzinfo=tz)
self.assertEqual(
dt.strftime(fmt),
'2004-10-31 02:00:00 CET+0100'
)
class CommonTimezonesTestCase(unittest.TestCase):
def test_bratislava(self):
# Bratislava is the default timezone for Slovakia, but our
# heuristics where not adding it to common_timezones. Ideally,
# common_timezones should be populated from zone.tab at runtime,
# but I'm hesitant to pay the startup cost as loading the list
# on demand whilst remaining backwards compatible seems
# difficult.
self.assertTrue('Europe/Bratislava' in pytz.common_timezones)
self.assertTrue('Europe/Bratislava' in pytz.common_timezones_set)
def test_us_eastern(self):
self.assertTrue('US/Eastern' in pytz.common_timezones)
self.assertTrue('US/Eastern' in pytz.common_timezones_set)
def test_belfast(self):
# Belfast uses London time.
self.assertTrue('Europe/Belfast' in pytz.all_timezones_set)
self.assertFalse('Europe/Belfast' in pytz.common_timezones)
self.assertFalse('Europe/Belfast' in pytz.common_timezones_set)
class BaseTzInfoTestCase:
'''Ensure UTC, StaticTzInfo and DstTzInfo work consistently.
These tests are run for each type of tzinfo.
'''
tz = None # override
tz_class = None # override
def test_expectedclass(self):
self.assertTrue(isinstance(self.tz, self.tz_class))
def test_fromutc(self):
# naive datetime.
dt1 = datetime(2011, 10, 31)
# localized datetime, same timezone.
dt2 = self.tz.localize(dt1)
# Both should give the same results. Note that the standard
# Python tzinfo.fromutc() only supports the second.
for dt in [dt1, dt2]:
loc_dt = self.tz.fromutc(dt)
loc_dt2 = pytz.utc.localize(dt1).astimezone(self.tz)
self.assertEqual(loc_dt, loc_dt2)
# localized datetime, different timezone.
new_tz = pytz.timezone('Europe/Paris')
self.assertTrue(self.tz is not new_tz)
dt3 = new_tz.localize(dt1)
self.assertRaises(ValueError, self.tz.fromutc, dt3)
def test_normalize(self):
other_tz = pytz.timezone('Europe/Paris')
self.assertTrue(self.tz is not other_tz)
dt = datetime(2012, 3, 26, 12, 0)
other_dt = other_tz.localize(dt)
local_dt = self.tz.normalize(other_dt)
self.assertTrue(local_dt.tzinfo is not other_dt.tzinfo)
self.assertNotEqual(
local_dt.replace(tzinfo=None), other_dt.replace(tzinfo=None))
def test_astimezone(self):
other_tz = pytz.timezone('Europe/Paris')
self.assertTrue(self.tz is not other_tz)
dt = datetime(2012, 3, 26, 12, 0)
other_dt = other_tz.localize(dt)
local_dt = other_dt.astimezone(self.tz)
self.assertTrue(local_dt.tzinfo is not other_dt.tzinfo)
self.assertNotEqual(
local_dt.replace(tzinfo=None), other_dt.replace(tzinfo=None))
class OptimizedUTCTestCase(unittest.TestCase, BaseTzInfoTestCase):
tz = pytz.utc
tz_class = tz.__class__
class LegacyUTCTestCase(unittest.TestCase, BaseTzInfoTestCase):
# Deprecated timezone, but useful for comparison tests.
tz = pytz.timezone('Etc/UTC')
tz_class = StaticTzInfo
class StaticTzInfoTestCase(unittest.TestCase, BaseTzInfoTestCase):
tz = pytz.timezone('GMT')
tz_class = StaticTzInfo
class DstTzInfoTestCase(unittest.TestCase, BaseTzInfoTestCase):
tz = pytz.timezone('Australia/Melbourne')
tz_class = DstTzInfo
def test_suite():
suite = unittest.TestSuite()
suite.addTest(doctest.DocTestSuite('pytz'))
suite.addTest(doctest.DocTestSuite('pytz.tzinfo'))
import test_tzinfo
suite.addTest(unittest.defaultTestLoader.loadTestsFromModule(test_tzinfo))
return suite
if __name__ == '__main__':
warnings.simplefilter("error") # Warnings should be fatal in tests.
unittest.main(defaultTest='test_suite')

View File

@ -142,14 +142,14 @@ class StaticTzInfo(BaseTzInfo):
def __reduce__(self):
# Special pickle to zone remains a singleton and to cope with
# database changes.
# database changes.
return pytz._p, (self.zone,)
class DstTzInfo(BaseTzInfo):
'''A timezone that has a variable offset from UTC
The offset might change if daylight savings time comes into effect,
The offset might change if daylight saving time comes into effect,
or at a point in history when the region decides to change their
timezone definition.
'''
@ -248,7 +248,7 @@ class DstTzInfo(BaseTzInfo):
than passing a tzinfo argument to a datetime constructor.
is_dst is used to determine the correct timezone in the ambigous
period at the end of daylight savings time.
period at the end of daylight saving time.
>>> from pytz import timezone
>>> fmt = '%Y-%m-%d %H:%M:%S %Z (%z)'
@ -264,7 +264,7 @@ class DstTzInfo(BaseTzInfo):
'1:00:00'
Use is_dst=None to raise an AmbiguousTimeError for ambiguous
times at the end of daylight savings
times at the end of daylight saving time
>>> try:
... loc_dt1 = amdam.localize(dt, is_dst=None)
@ -278,7 +278,7 @@ class DstTzInfo(BaseTzInfo):
True
is_dst is also used to determine the correct timezone in the
wallclock times jumped over at the start of daylight savings time.
wallclock times jumped over at the start of daylight saving time.
>>> pacific = timezone('US/Pacific')
>>> dt = datetime(2008, 3, 9, 2, 0, 0)
@ -369,13 +369,15 @@ class DstTzInfo(BaseTzInfo):
# hints to be passed in (such as the UTC offset or abbreviation),
# but that is just getting silly.
#
# Choose the earliest (by UTC) applicable timezone.
sorting_keys = {}
# Choose the earliest (by UTC) applicable timezone if is_dst=True
# Choose the latest (by UTC) applicable timezone if is_dst=False
# i.e., behave like end-of-DST transition
dates = {} # utc -> local
for local_dt in filtered_possible_loc_dt:
key = local_dt.replace(tzinfo=None) - local_dt.tzinfo._utcoffset
sorting_keys[key] = local_dt
first_key = sorted(sorting_keys)[0]
return sorting_keys[first_key]
utc_time = local_dt.replace(tzinfo=None) - local_dt.tzinfo._utcoffset
assert utc_time not in dates
dates[utc_time] = local_dt
return dates[[min, max][not is_dst](dates)]
def utcoffset(self, dt, is_dst=None):
'''See datetime.tzinfo.utcoffset
@ -560,4 +562,3 @@ def unpickler(zone, utcoffset=None, dstoffset=None, tzname=None):
inf = (utcoffset, dstoffset, tzname)
tz._tzinfos[inf] = tz.__class__(inf, tz._tzinfos)
return tz._tzinfos[inf]

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