我们从Python开源项目中，提取了以下50个代码示例，用于说明如何使用datetime.tzinfo.tzname()。
def test_pickling_subclass(self): # Make sure we can pickle/unpickle an instance of a subclass. offset = timedelta(minutes=-300) for otype, args in [ (PicklableFixedOffset, (offset, 'cookie')), (timezone, (offset,)), (timezone, (offset, "EST"))]: orig = otype(*args) oname = orig.tzname(None) self.assertIsInstance(orig, tzinfo) self.assertIs(type(orig), otype) self.assertEqual(orig.utcoffset(None), offset) self.assertEqual(orig.tzname(None), oname) for pickler, unpickler, proto in pickle_choices: green = pickler.dumps(orig, proto) derived = unpickler.loads(green) self.assertIsInstance(derived, tzinfo) self.assertIs(type(derived), otype) self.assertEqual(derived.utcoffset(None), offset) self.assertEqual(derived.tzname(None), oname)
def test_argument_passing(self): cls = self.theclass # A datetime passes itself on, a time passes None. class introspective(tzinfo): def tzname(self, dt): return dt and "real" or "none" def utcoffset(self, dt): return timedelta(minutes = dt and 42 or -42) dst = utcoffset obj = cls(1, 2, 3, tzinfo=introspective()) expected = cls is time and "none" or "real" self.assertEqual(obj.tzname(), expected) expected = timedelta(minutes=(cls is time and -42 or 42)) self.assertEqual(obj.utcoffset(), expected) self.assertEqual(obj.dst(), expected)
def test_pickling(self): # Try one without a tzinfo. args = 20, 59, 16, 64**2 orig = self.theclass(*args) for pickler, unpickler, proto in pickle_choices: green = pickler.dumps(orig, proto) derived = unpickler.loads(green) self.assertEqual(orig, derived) # Try one with a tzinfo. tinfo = PicklableFixedOffset(-300, 'cookie') orig = self.theclass(5, 6, 7, tzinfo=tinfo) for pickler, unpickler, proto in pickle_choices: green = pickler.dumps(orig, proto) derived = unpickler.loads(green) self.assertEqual(orig, derived) self.assertIsInstance(derived.tzinfo, PicklableFixedOffset) self.assertEqual(derived.utcoffset(), timedelta(minutes=-300)) self.assertEqual(derived.tzname(), 'cookie')
def test_pickling(self): # Try one without a tzinfo. args = 6, 7, 23, 20, 59, 1, 64**2 orig = self.theclass(*args) for pickler, unpickler, proto in pickle_choices: green = pickler.dumps(orig, proto) derived = unpickler.loads(green) self.assertEqual(orig, derived) # Try one with a tzinfo. tinfo = PicklableFixedOffset(-300, 'cookie') orig = self.theclass(*args, **{'tzinfo': tinfo}) derived = self.theclass(1, 1, 1, tzinfo=FixedOffset(0, "", 0)) for pickler, unpickler, proto in pickle_choices: green = pickler.dumps(orig, proto) derived = unpickler.loads(green) self.assertEqual(orig, derived) self.assertIsInstance(derived.tzinfo, PicklableFixedOffset) self.assertEqual(derived.utcoffset(), timedelta(minutes=-300)) self.assertEqual(derived.tzname(), 'cookie')
def test_tzinfo_isoformat(self): zero = FixedOffset(0, "+00:00") plus = FixedOffset(220, "+03:40") minus = FixedOffset(-231, "-03:51") unknown = FixedOffset(None, "") cls = self.theclass datestr = '0001-02-03' for ofs in None, zero, plus, minus, unknown: for us in 0, 987001: d = cls(1, 2, 3, 4, 5, 59, us, tzinfo=ofs) timestr = '04:05:59' + (us and '.987001' or '') ofsstr = ofs is not None and d.tzname() or '' tailstr = timestr + ofsstr iso = d.isoformat() self.assertEqual(iso, datestr + 'T' + tailstr) self.assertEqual(iso, d.isoformat('T')) self.assertEqual(d.isoformat('k'), datestr + 'k' + tailstr) self.assertEqual(d.isoformat('\u1234'), datestr + '\u1234' + tailstr) self.assertEqual(str(d), datestr + ' ' + tailstr)
def test_pickling_subclass(self): # Make sure we can pickle/unpickle an instance of a subclass. offset = timedelta(minutes=-300) orig = PicklableFixedOffset(offset, 'cookie') self.assertIsInstance(orig, tzinfo) self.assertTrue(type(orig) is PicklableFixedOffset) self.assertEqual(orig.utcoffset(None), offset) self.assertEqual(orig.tzname(None), 'cookie') for pickler, unpickler, proto in pickle_choices: green = pickler.dumps(orig, proto) derived = unpickler.loads(green) self.assertIsInstance(derived, tzinfo) self.assertTrue(type(derived) is PicklableFixedOffset) self.assertEqual(derived.utcoffset(None), offset) self.assertEqual(derived.tzname(None), 'cookie') ############################################################################# # Base class for testing a particular aspect of timedelta, time, date and # datetime comparisons.
def test_tzinfo_isoformat(self): zero = FixedOffset(0, "+00:00") plus = FixedOffset(220, "+03:40") minus = FixedOffset(-231, "-03:51") unknown = FixedOffset(None, "") cls = self.theclass datestr = '0001-02-03' for ofs in None, zero, plus, minus, unknown: for us in 0, 987001: d = cls(1, 2, 3, 4, 5, 59, us, tzinfo=ofs) timestr = '04:05:59' + (us and '.987001' or '') ofsstr = ofs is not None and d.tzname() or '' tailstr = timestr + ofsstr iso = d.isoformat() self.assertEqual(iso, datestr + 'T' + tailstr) self.assertEqual(iso, d.isoformat('T')) self.assertEqual(d.isoformat('k'), datestr + 'k' + tailstr) self.assertEqual(str(d), datestr + ' ' + tailstr)
def test_pickling_subclass(self): # Make sure we can pickle/unpickle an instance of a subclass. offset = timedelta(minutes=-300) orig = PicklableFixedOffset(offset, 'cookie') self.assertIsInstance(orig, tzinfo) self.assertTrue(type(orig) is PicklableFixedOffset) self.assertEqual(orig.utcoffset(None), offset) self.assertEqual(orig.tzname(None), 'cookie') for pickler, unpickler, proto in pickle_choices: green = pickler.dumps(orig, proto) derived = unpickler.loads(green) self.assertIsInstance(derived, tzinfo) self.assertTrue(type(derived) is PicklableFixedOffset) self.assertEqual(derived.utcoffset(None), offset) self.assertEqual(derived.tzname(None), 'cookie') ############################################################################# # Base clase for testing a particular aspect of timedelta, time, date and # datetime comparisons.
def tzname(self, dt): return self.__name
def test_non_abstractness(self): # In order to allow subclasses to get pickled, the C implementation # wasn't able to get away with having __init__ raise # NotImplementedError. useless = tzinfo() dt = datetime.max self.assertRaises(NotImplementedError, useless.tzname, dt) self.assertRaises(NotImplementedError, useless.utcoffset, dt) self.assertRaises(NotImplementedError, useless.dst, dt)
def test_subclass_must_override(self): class NotEnough(tzinfo): def __init__(self, offset, name): self.__offset = offset self.__name = name self.assertTrue(issubclass(NotEnough, tzinfo)) ne = NotEnough(3, "NotByALongShot") self.assertIsInstance(ne, tzinfo) dt = datetime.now() self.assertRaises(NotImplementedError, ne.tzname, dt) self.assertRaises(NotImplementedError, ne.utcoffset, dt) self.assertRaises(NotImplementedError, ne.dst, dt)
def test_normal(self): fo = FixedOffset(3, "Three") self.assertIsInstance(fo, tzinfo) for dt in datetime.now(), None: self.assertEqual(fo.utcoffset(dt), timedelta(minutes=3)) self.assertEqual(fo.tzname(dt), "Three") self.assertEqual(fo.dst(dt), timedelta(minutes=42))
def test_tzname(self): self.assertEqual('UTC+00:00', timezone(ZERO).tzname(None)) self.assertEqual('UTC-05:00', timezone(-5 * HOUR).tzname(None)) self.assertEqual('UTC+09:30', timezone(9.5 * HOUR).tzname(None)) self.assertEqual('UTC-00:01', timezone(timedelta(minutes=-1)).tzname(None)) self.assertEqual('XYZ', timezone(-5 * HOUR, 'XYZ').tzname(None)) with self.assertRaises(TypeError): self.EST.tzname('') with self.assertRaises(TypeError): self.EST.tzname(5)
def test_aware_datetime(self): # test that timezone instances can be used by datetime t = datetime(1, 1, 1) for tz in [timezone.min, timezone.max, timezone.utc]: self.assertEqual(tz.tzname(t), t.replace(tzinfo=tz).tzname()) self.assertEqual(tz.utcoffset(t), t.replace(tzinfo=tz).utcoffset()) self.assertEqual(tz.dst(t), t.replace(tzinfo=tz).dst()) ############################################################################# # Base clase for testing a particular aspect of timedelta, time, date and # datetime comparisons.
def test_strftime_with_bad_tzname_replace(self): # verify ok if tzinfo.tzname().replace() returns a non-string class MyTzInfo(FixedOffset): def tzname(self, dt): class MyStr(str): def replace(self, *args): return None return MyStr('name') t = self.theclass(2005, 3, 2, 0, 0, 0, 0, MyTzInfo(3, 'name')) self.assertRaises(TypeError, t.strftime, '%Z')
def test_strptime(self): string = '2004-12-01 13:02:47.197' format = '%Y-%m-%d %H:%M:%S.%f' expected = _strptime._strptime_datetime(self.theclass, string, format) got = self.theclass.strptime(string, format) self.assertEqual(expected, got) self.assertIs(type(expected), self.theclass) self.assertIs(type(got), self.theclass) strptime = self.theclass.strptime self.assertEqual(strptime("+0002", "%z").utcoffset(), 2 * MINUTE) self.assertEqual(strptime("-0002", "%z").utcoffset(), -2 * MINUTE) # Only local timezone and UTC are supported for tzseconds, tzname in ((0, 'UTC'), (0, 'GMT'), (-_time.timezone, _time.tzname[0])): if tzseconds < 0: sign = '-' seconds = -tzseconds else: sign ='+' seconds = tzseconds hours, minutes = divmod(seconds//60, 60) dtstr = "{}{:02d}{:02d} {}".format(sign, hours, minutes, tzname) dt = strptime(dtstr, "%z %Z") self.assertEqual(dt.utcoffset(), timedelta(seconds=tzseconds)) self.assertEqual(dt.tzname(), tzname) # Can produce inconsistent datetime dtstr, fmt = "+1234 UTC", "%z %Z" dt = strptime(dtstr, fmt) self.assertEqual(dt.utcoffset(), 12 * HOUR + 34 * MINUTE) self.assertEqual(dt.tzname(), 'UTC') # yet will roundtrip self.assertEqual(dt.strftime(fmt), dtstr) # Produce naive datetime if no %z is provided self.assertEqual(strptime("UTC", "%Z").tzinfo, None) with self.assertRaises(ValueError): strptime("-2400", "%z") with self.assertRaises(ValueError): strptime("-000", "%z")
def test_replace(self): cls = self.theclass z100 = FixedOffset(100, "+100") zm200 = FixedOffset(timedelta(minutes=-200), "-200") args = [1, 2, 3, 4, z100] base = cls(*args) self.assertEqual(base, base.replace()) i = 0 for name, newval in (("hour", 5), ("minute", 6), ("second", 7), ("microsecond", 8), ("tzinfo", zm200)): newargs = args[:] newargs[i] = newval expected = cls(*newargs) got = base.replace(**{name: newval}) self.assertEqual(expected, got) i += 1 # Ensure we can get rid of a tzinfo. self.assertEqual(base.tzname(), "+100") base2 = base.replace(tzinfo=None) self.assertTrue(base2.tzinfo is None) self.assertTrue(base2.tzname() is None) # Ensure we can add one. base3 = base2.replace(tzinfo=z100) self.assertEqual(base, base3) self.assertTrue(base.tzinfo is base3.tzinfo) # Out of bounds. base = cls(1) self.assertRaises(ValueError, base.replace, hour=24) self.assertRaises(ValueError, base.replace, minute=-1) self.assertRaises(ValueError, base.replace, second=100) self.assertRaises(ValueError, base.replace, microsecond=1000000)
def test_zones(self): est = FixedOffset(-300, "EST") utc = FixedOffset(0, "UTC") met = FixedOffset(60, "MET") t1 = datetime(2002, 3, 19, 7, 47, tzinfo=est) t2 = datetime(2002, 3, 19, 12, 47, tzinfo=utc) t3 = datetime(2002, 3, 19, 13, 47, tzinfo=met) self.assertEqual(t1.tzinfo, est) self.assertEqual(t2.tzinfo, utc) self.assertEqual(t3.tzinfo, met) self.assertEqual(t1.utcoffset(), timedelta(minutes=-300)) self.assertEqual(t2.utcoffset(), timedelta(minutes=0)) self.assertEqual(t3.utcoffset(), timedelta(minutes=60)) self.assertEqual(t1.tzname(), "EST") self.assertEqual(t2.tzname(), "UTC") self.assertEqual(t3.tzname(), "MET") self.assertEqual(hash(t1), hash(t2)) self.assertEqual(hash(t1), hash(t3)) self.assertEqual(hash(t2), hash(t3)) self.assertEqual(t1, t2) self.assertEqual(t1, t3) self.assertEqual(t2, t3) self.assertEqual(str(t1), "2002-03-19 07:47:00-05:00") self.assertEqual(str(t2), "2002-03-19 12:47:00+00:00") self.assertEqual(str(t3), "2002-03-19 13:47:00+01:00") d = 'datetime.datetime(2002, 3, 19, ' self.assertEqual(repr(t1), d + "7, 47, tzinfo=est)") self.assertEqual(repr(t2), d + "12, 47, tzinfo=utc)") self.assertEqual(repr(t3), d + "13, 47, tzinfo=met)")
def tzname(self, dt): if self.dst(dt): return self.dstname else: return self.stdname
