Python dateutil.tz方法代码示例

# 需要导入模块: import dateutil [as 别名]
# 或者: from dateutil import tz [as 别名]
def testImportedModules(self):
        import dateutil.easter
        import dateutil.parser
        import dateutil.relativedelta
        import dateutil.rrule
        import dateutil.tz
        import dateutil.utils
        import dateutil.zoneinfo

        self.assertEquals(dateutil.easter, new_locals.pop("easter"))
        self.assertEquals(dateutil.parser, new_locals.pop("parser"))
        self.assertEquals(dateutil.relativedelta, new_locals.pop("relativedelta"))
        self.assertEquals(dateutil.rrule, new_locals.pop("rrule"))
        self.assertEquals(dateutil.tz, new_locals.pop("tz"))
        self.assertEquals(dateutil.utils, new_locals.pop("utils"))
        self.assertEquals(dateutil.zoneinfo, new_locals.pop("zoneinfo"))

        self.assertFalse(new_locals) 

# 需要导入模块: import dateutil [as 别名]
# 或者: from dateutil import tz [as 别名]
def testTzAll(self):
        from dateutil.tz import tzutc
        from dateutil.tz import tzoffset
        from dateutil.tz import tzlocal
        from dateutil.tz import tzfile
        from dateutil.tz import tzrange
        from dateutil.tz import tzstr
        from dateutil.tz import tzical
        from dateutil.tz import gettz
        from dateutil.tz import tzwin
        from dateutil.tz import tzwinlocal
        from dateutil.tz import UTC
        from dateutil.tz import datetime_ambiguous
        from dateutil.tz import datetime_exists
        from dateutil.tz import resolve_imaginary

        tz_all = ["tzutc", "tzoffset", "tzlocal", "tzfile", "tzrange",
                  "tzstr", "tzical", "gettz", "datetime_ambiguous",
                  "datetime_exists", "resolve_imaginary", "UTC"]

        tz_all += ["tzwin", "tzwinlocal"] if sys.platform.startswith("win") else []
        lvars = locals()

        for var in tz_all:
            self.assertIsNot(lvars[var], None) 

# 需要导入模块: import dateutil [as 别名]
# 或者: from dateutil import tz [as 别名]
def test_dti_tz_localize_nonexistent_raise_coerce(self):
        # GH#13057
        times = ['2015-03-08 01:00', '2015-03-08 02:00', '2015-03-08 03:00']
        index = DatetimeIndex(times)
        tz = 'US/Eastern'
        with pytest.raises(pytz.NonExistentTimeError):
            index.tz_localize(tz=tz)

        with pytest.raises(pytz.NonExistentTimeError):
            with tm.assert_produces_warning(FutureWarning):
                index.tz_localize(tz=tz, errors='raise')

        with tm.assert_produces_warning(FutureWarning,
                                        clear=FutureWarning,
                                        check_stacklevel=False):
            result = index.tz_localize(tz=tz, errors='coerce')
        test_times = ['2015-03-08 01:00-05:00', 'NaT',
                      '2015-03-08 03:00-04:00']
        dti = to_datetime(test_times, utc=True)
        expected = dti.tz_convert('US/Eastern')
        tm.assert_index_equal(result, expected) 

# 需要导入模块: import dateutil [as 别名]
# 或者: from dateutil import tz [as 别名]
def test_dti_tz_localize_ambiguous_infer(self, tz):
        # November 6, 2011, fall back, repeat 2 AM hour
        # With no repeated hours, we cannot infer the transition
        dr = date_range(datetime(2011, 11, 6, 0), periods=5,
                        freq=pd.offsets.Hour())
        with pytest.raises(pytz.AmbiguousTimeError):
            dr.tz_localize(tz)

        # With repeated hours, we can infer the transition
        dr = date_range(datetime(2011, 11, 6, 0), periods=5,
                        freq=pd.offsets.Hour(), tz=tz)
        times = ['11/06/2011 00:00', '11/06/2011 01:00', '11/06/2011 01:00',
                 '11/06/2011 02:00', '11/06/2011 03:00']
        di = DatetimeIndex(times)
        localized = di.tz_localize(tz, ambiguous='infer')
        tm.assert_index_equal(dr, localized)
        tm.assert_index_equal(dr, DatetimeIndex(times, tz=tz,
                                                ambiguous='infer'))

        # When there is no dst transition, nothing special happens
        dr = date_range(datetime(2011, 6, 1, 0), periods=10,
                        freq=pd.offsets.Hour())
        localized = dr.tz_localize(tz)
        localized_infer = dr.tz_localize(tz, ambiguous='infer')
        tm.assert_index_equal(localized, localized_infer) 

# 需要导入模块: import dateutil [as 别名]
# 或者: from dateutil import tz [as 别名]
def test_dti_tz_localize_ambiguous_times(self, tz):
        # March 13, 2011, spring forward, skip from 2 AM to 3 AM
        dr = date_range(datetime(2011, 3, 13, 1, 30), periods=3,
                        freq=pd.offsets.Hour())
        with pytest.raises(pytz.NonExistentTimeError):
            dr.tz_localize(tz)

        # after dst transition, it works
        dr = date_range(datetime(2011, 3, 13, 3, 30), periods=3,
                        freq=pd.offsets.Hour(), tz=tz)

        # November 6, 2011, fall back, repeat 2 AM hour
        dr = date_range(datetime(2011, 11, 6, 1, 30), periods=3,
                        freq=pd.offsets.Hour())
        with pytest.raises(pytz.AmbiguousTimeError):
            dr.tz_localize(tz)

        # UTC is OK
        dr = date_range(datetime(2011, 3, 13), periods=48,
                        freq=pd.offsets.Minute(30), tz=pytz.utc) 

# 需要导入模块: import dateutil [as 别名]
# 或者: from dateutil import tz [as 别名]
def test_dti_tz_localize(self, prefix):
        tzstr = prefix + 'US/Eastern'
        dti = pd.date_range(start='1/1/2005', end='1/1/2005 0:00:30.256',
                            freq='L')
        dti2 = dti.tz_localize(tzstr)

        dti_utc = pd.date_range(start='1/1/2005 05:00',
                                end='1/1/2005 5:00:30.256', freq='L', tz='utc')

        tm.assert_numpy_array_equal(dti2.values, dti_utc.values)

        dti3 = dti2.tz_convert(prefix + 'US/Pacific')
        tm.assert_numpy_array_equal(dti3.values, dti_utc.values)

        dti = pd.date_range(start='11/6/2011 1:59', end='11/6/2011 2:00',
                            freq='L')
        with pytest.raises(pytz.AmbiguousTimeError):
            dti.tz_localize(tzstr)

        dti = pd.date_range(start='3/13/2011 1:59', end='3/13/2011 2:00',
                            freq='L')
        with pytest.raises(pytz.NonExistentTimeError):
            dti.tz_localize(tzstr) 

# 需要导入模块: import dateutil [as 别名]
# 或者: from dateutil import tz [as 别名]
def test_dti_tz_localize_utc_conversion(self, tz):
        # Localizing to time zone should:
        #  1) check for DST ambiguities
        #  2) convert to UTC

        rng = date_range('3/10/2012', '3/11/2012', freq='30T')

        converted = rng.tz_localize(tz)
        expected_naive = rng + pd.offsets.Hour(5)
        tm.assert_numpy_array_equal(converted.asi8, expected_naive.asi8)

        # DST ambiguity, this should fail
        rng = date_range('3/11/2012', '3/12/2012', freq='30T')
        # Is this really how it should fail??
        with pytest.raises(pytz.NonExistentTimeError):
            rng.tz_localize(tz) 

# 需要导入模块: import dateutil [as 别名]
# 或者: from dateutil import tz [as 别名]
def test_normalize_tz_local(self, timezone):
        # GH#13459
        with tm.set_timezone(timezone):
            rng = date_range('1/1/2000 9:30', periods=10, freq='D',
                             tz=tzlocal())

            result = rng.normalize()
            expected = date_range('1/1/2000', periods=10, freq='D',
                                  tz=tzlocal())
            tm.assert_index_equal(result, expected)

            assert result.is_normalized
            assert not rng.is_normalized

    # ------------------------------------------------------------
    # DatetimeIndex.__new__ 

# 需要导入模块: import dateutil [as 别名]
# 或者: from dateutil import tz [as 别名]
def test_dti_tz_constructors(self, tzstr):
        """ Test different DatetimeIndex constructions with timezone
        Follow-up of GH#4229
        """

        arr = ['11/10/2005 08:00:00', '11/10/2005 09:00:00']

        idx1 = to_datetime(arr).tz_localize(tzstr)
        idx2 = pd.date_range(start="2005-11-10 08:00:00", freq='H', periods=2,
                             tz=tzstr)
        idx3 = DatetimeIndex(arr, tz=tzstr)
        idx4 = DatetimeIndex(np.array(arr), tz=tzstr)

        for other in [idx2, idx3, idx4]:
            tm.assert_index_equal(idx1, other)

    # -------------------------------------------------------------
    # Unsorted 

# 需要导入模块: import dateutil [as 别名]
# 或者: from dateutil import tz [as 别名]
def test_drop_dst_boundary(self):
        # see gh-18031
        tz = "Europe/Brussels"
        freq = "15min"

        start = pd.Timestamp("201710290100", tz=tz)
        end = pd.Timestamp("201710290300", tz=tz)
        index = pd.date_range(start=start, end=end, freq=freq)

        expected = DatetimeIndex(["201710290115", "201710290130",
                                  "201710290145", "201710290200",
                                  "201710290215", "201710290230",
                                  "201710290245", "201710290200",
                                  "201710290215", "201710290230",
                                  "201710290245", "201710290300"],
                                 tz=tz, freq=freq,
                                 ambiguous=[True, True, True, True,
                                            True, True, True, False,
                                            False, False, False, False])
        result = index.drop(index[0])
        tm.assert_index_equal(result, expected) 

# 需要导入模块: import dateutil [as 别名]
# 或者: from dateutil import tz [as 别名]
def test_dti_astype_asobject_tzinfos(self, tzstr):
        # GH#1345

        # dates around a dst transition
        rng = date_range('2/13/2010', '5/6/2010', tz=tzstr)

        objs = rng.astype(object)
        for i, x in enumerate(objs):
            exval = rng[i]
            assert x == exval
            assert x.tzinfo == exval.tzinfo

        objs = rng.astype(object)
        for i, x in enumerate(objs):
            exval = rng[i]
            assert x == exval
            assert x.tzinfo == exval.tzinfo 

# 需要导入模块: import dateutil [as 别名]
# 或者: from dateutil import tz [as 别名]
def test_utc_box_timestamp_and_localize(self, tzstr):
        tz = timezones.maybe_get_tz(tzstr)

        rng = date_range('3/11/2012', '3/12/2012', freq='H', tz='utc')
        rng_eastern = rng.tz_convert(tzstr)

        expected = rng[-1].astimezone(tz)

        stamp = rng_eastern[-1]
        assert stamp == expected
        assert stamp.tzinfo == expected.tzinfo

        # right tzinfo
        rng = date_range('3/13/2012', '3/14/2012', freq='H', tz='utc')
        rng_eastern = rng.tz_convert(tzstr)
        # test not valid for dateutil timezones.
        # assert 'EDT' in repr(rng_eastern[0].tzinfo)
        assert ('EDT' in repr(rng_eastern[0].tzinfo) or
                'tzfile' in repr(rng_eastern[0].tzinfo)) 

# 需要导入模块: import dateutil [as 别名]
# 或者: from dateutil import tz [as 别名]
def test_astype_datetime64(self):
        # GH 13149, GH 13209
        idx = DatetimeIndex(['2016-05-16', 'NaT', NaT, np.NaN])

        result = idx.astype('datetime64[ns]')
        tm.assert_index_equal(result, idx)
        assert result is not idx

        result = idx.astype('datetime64[ns]', copy=False)
        tm.assert_index_equal(result, idx)
        assert result is idx

        idx_tz = DatetimeIndex(['2016-05-16', 'NaT', NaT, np.NaN], tz='EST')
        result = idx_tz.astype('datetime64[ns]')
        expected = DatetimeIndex(['2016-05-16 05:00:00', 'NaT', 'NaT', 'NaT'],
                                 dtype='datetime64[ns]')
        tm.assert_index_equal(result, expected) 

# 需要导入模块: import dateutil [as 别名]
# 或者: from dateutil import tz [as 别名]
def test_index_convert_to_datetime_array(self):
        def _check_rng(rng):
            converted = rng.to_pydatetime()
            assert isinstance(converted, np.ndarray)
            for x, stamp in zip(converted, rng):
                assert isinstance(x, datetime)
                assert x == stamp.to_pydatetime()
                assert x.tzinfo == stamp.tzinfo

        rng = date_range('20090415', '20090519')
        rng_eastern = date_range('20090415', '20090519', tz='US/Eastern')
        rng_utc = date_range('20090415', '20090519', tz='utc')

        _check_rng(rng)
        _check_rng(rng_eastern)
        _check_rng(rng_utc) 

# 需要导入模块: import dateutil [as 别名]
# 或者: from dateutil import tz [as 别名]
def test_index_convert_to_datetime_array_explicit_pytz(self):
        def _check_rng(rng):
            converted = rng.to_pydatetime()
            assert isinstance(converted, np.ndarray)
            for x, stamp in zip(converted, rng):
                assert isinstance(x, datetime)
                assert x == stamp.to_pydatetime()
                assert x.tzinfo == stamp.tzinfo

        rng = date_range('20090415', '20090519')
        rng_eastern = date_range('20090415', '20090519',
                                 tz=pytz.timezone('US/Eastern'))
        rng_utc = date_range('20090415', '20090519', tz=pytz.utc)

        _check_rng(rng)
        _check_rng(rng_eastern)
        _check_rng(rng_utc)