Python dateutil.zoneinfo.gettz() Examples

def testFoldNegativeUTCOffset(self):
            # Test that we can resolve ambiguous times
            tzname = self._get_tzname('America/Toronto')

            with self._gettz_context(tzname):
                TOR = self.gettz(tzname)

                t0_u = datetime(2011, 11, 6, 5, 30, tzinfo=tz.tzutc())
                t1_u = datetime(2011, 11, 6, 6, 30, tzinfo=tz.tzutc())

                t0_tor = t0_u.astimezone(TOR)
                t1_tor = t1_u.astimezone(TOR)

                self.assertEqual(t0_tor.replace(tzinfo=None),
                                 datetime(2011, 11, 6, 1, 30))

                self.assertEqual(t1_tor.replace(tzinfo=None),
                                 datetime(2011, 11, 6, 1, 30))

                self.assertNotEqual(t0_tor.tzname(), t1_tor.tzname())
                self.assertEqual(t0_tor.utcoffset(), timedelta(hours=-4.0))
                self.assertEqual(t1_tor.utcoffset(), timedelta(hours=-5.0)) 

def __get_kiritimati_resolve_imaginary_test():
    # In the 2018d release of the IANA database, the Kiritimati "imaginary day"
    # data was corrected, so if the system zoneinfo is older than 2018d, the
    # Kiritimati test will fail.

    tzi = tz.gettz('Pacific/Kiritimati')
    new_version = False
    if not tz.datetime_exists(datetime(1995, 1, 1, 12, 30), tzi):
        zif = zoneinfo.get_zonefile_instance()
        if zif.metadata is not None:
            new_version = zif.metadata['tzversion'] >= '2018d'

        if new_version:
            tzi = zif.get('Pacific/Kiritimati')
    else:
        new_version = True

    if new_version:
        dates = (datetime(1994, 12, 31, 12, 30), datetime(1995, 1, 1, 12, 30))
    else:
        dates = (datetime(1995, 1, 1, 12, 30), datetime(1995, 1, 2, 12, 30))

    return (tzi, ) + dates 

def testFoldPositiveUTCOffset(self):
        # Test that we can resolve ambiguous times
        tzname = self._get_tzname('Australia/Sydney')

        with self._gettz_context(tzname):
            SYD0 = self.gettz(tzname)
            SYD1 = self.gettz(tzname)

            t0_u = datetime(2012, 3, 31, 15, 30, tzinfo=tz.tzutc())  # AEST
            t1_u = datetime(2012, 3, 31, 16, 30, tzinfo=tz.tzutc())  # AEDT

            # Using fresh tzfiles
            t0_syd0 = t0_u.astimezone(SYD0)
            t1_syd1 = t1_u.astimezone(SYD1)

            self.assertEqual(t0_syd0.replace(tzinfo=None),
                             datetime(2012, 4, 1, 2, 30))

            self.assertEqual(t1_syd1.replace(tzinfo=None),
                             datetime(2012, 4, 1, 2, 30))

            self.assertEqual(t0_syd0.utcoffset(), timedelta(hours=11))
            self.assertEqual(t1_syd1.utcoffset(), timedelta(hours=10)) 

def testGapPositiveUTCOffset(self):
        # Test that we don't have a problem around gaps.
        tzname = self._get_tzname('Australia/Sydney')

        with self._gettz_context(tzname):
            SYD0 = self.gettz(tzname)
            SYD1 = self.gettz(tzname)

            t0_u = datetime(2012, 10, 6, 15, 30, tzinfo=tz.tzutc())  # AEST
            t1_u = datetime(2012, 10, 6, 16, 30, tzinfo=tz.tzutc())  # AEDT

            # Using fresh tzfiles
            t0 = t0_u.astimezone(SYD0)
            t1 = t1_u.astimezone(SYD1)

            self.assertEqual(t0.replace(tzinfo=None),
                             datetime(2012, 10, 7, 1, 30))

            self.assertEqual(t1.replace(tzinfo=None),
                             datetime(2012, 10, 7, 3, 30))

            self.assertEqual(t0.utcoffset(), timedelta(hours=10))
            self.assertEqual(t1.utcoffset(), timedelta(hours=11)) 

def testFoldNegativeUTCOffset(self):
            # Test that we can resolve ambiguous times
            tzname = self._get_tzname('America/Toronto')

            with self._gettz_context(tzname):
                # Calling fromutc() alters the tzfile object
                TOR0 = self.gettz(tzname)
                TOR1 = self.gettz(tzname)

                t0_u = datetime(2011, 11, 6, 5, 30, tzinfo=tz.tzutc())
                t1_u = datetime(2011, 11, 6, 6, 30, tzinfo=tz.tzutc())

                # Using fresh tzfiles
                t0_tor0 = t0_u.astimezone(TOR0)
                t1_tor1 = t1_u.astimezone(TOR1)

                self.assertEqual(t0_tor0.replace(tzinfo=None),
                                 datetime(2011, 11, 6, 1, 30))

                self.assertEqual(t1_tor1.replace(tzinfo=None),
                                 datetime(2011, 11, 6, 1, 30))

                self.assertEqual(t0_tor0.utcoffset(), timedelta(hours=-4.0))
                self.assertEqual(t1_tor1.utcoffset(), timedelta(hours=-5.0)) 

def testGapNegativeUTCOffset(self):
        # Test that we don't have a problem around gaps.
        tzname = self._get_tzname('America/Toronto')

        with self._gettz_context(tzname):
            # Calling fromutc() alters the tzfile object
            TOR0 = self.gettz(tzname)
            TOR1 = self.gettz(tzname)

            t0_u = datetime(2011, 3, 13, 6, 30, tzinfo=tz.tzutc())
            t1_u = datetime(2011, 3, 13, 7, 30, tzinfo=tz.tzutc())

            # Using fresh tzfiles
            t0 = t0_u.astimezone(TOR0)
            t1 = t1_u.astimezone(TOR1)

            self.assertEqual(t0.replace(tzinfo=None),
                             datetime(2011, 3, 13, 1, 30))

            self.assertEqual(t1.replace(tzinfo=None),
                             datetime(2011, 3, 13, 3, 30))

            self.assertNotEqual(t0, t1)
            self.assertEqual(t0.utcoffset(), timedelta(hours=-5.0))
            self.assertEqual(t1.utcoffset(), timedelta(hours=-4.0)) 

def testEqualAmbiguousComparison(self):
        tzname = self._get_tzname('Australia/Sydney')

        with self._gettz_context(tzname):
            SYD0 = self.gettz(tzname)
            SYD1 = self.gettz(tzname)

            t0_u = datetime(2012, 3, 31, 14, 30, tzinfo=tz.tzutc())  # AEST
            t1_u = datetime(2012, 3, 31, 16, 30, tzinfo=tz.tzutc())  # AEDT

            t0_syd0 = t0_u.astimezone(SYD0)
            t0_syd1 = t0_u.astimezone(SYD1)

            # This is considered an "inter-zone comparison" because it's an
            # ambiguous datetime.
            self.assertEqual(t0_syd0, t0_syd1) 

def testFoldPositiveUTCOffset(self):
        # Test that we can resolve ambiguous times
        tzname = self._get_tzname('Australia/Sydney')

        with self._gettz_context(tzname):
            SYD = self.gettz(tzname)

            t0_u = datetime(2012, 3, 31, 15, 30, tzinfo=tz.tzutc())  # AEST
            t1_u = datetime(2012, 3, 31, 16, 30, tzinfo=tz.tzutc())  # AEDT

            t0_syd0 = t0_u.astimezone(SYD)
            t1_syd1 = t1_u.astimezone(SYD)

            self.assertEqual(t0_syd0.replace(tzinfo=None),
                             datetime(2012, 4, 1, 2, 30))

            self.assertEqual(t1_syd1.replace(tzinfo=None),
                             datetime(2012, 4, 1, 2, 30))

            self.assertEqual(t0_syd0.utcoffset(), timedelta(hours=11))
            self.assertEqual(t1_syd1.utcoffset(), timedelta(hours=10)) 

def testInZoneFoldEquality(self):
        # Two datetimes in the same zone are considered to be equal if their
        # wall times are equal, even if they have different absolute times.

        tzname = self._get_tzname('America/New_York')

        with self._gettz_context(tzname):
            NYC = self.gettz(tzname)
            UTC = tz.tzutc()

            dt0 = datetime(2011, 11, 6, 1, 30, tzinfo=NYC)
            dt1 = tz.enfold(dt0, fold=1)

            # Make sure these actually represent different times
            self.assertNotEqual(dt0.astimezone(UTC), dt1.astimezone(UTC))

            # Test that they compare equal
            self.assertEqual(dt0, dt1) 

def testGapPositiveUTCOffset(self):
        # Test that we don't have a problem around gaps.
        tzname = self._get_tzname('Australia/Sydney')

        with self._gettz_context(tzname):
            SYD = self.gettz(tzname)

            t0_u = datetime(2012, 10, 6, 15, 30, tzinfo=tz.tzutc())  # AEST
            t1_u = datetime(2012, 10, 6, 16, 30, tzinfo=tz.tzutc())  # AEDT

            t0 = t0_u.astimezone(SYD)
            t1 = t1_u.astimezone(SYD)

            self.assertEqual(t0.replace(tzinfo=None),
                             datetime(2012, 10, 7, 1, 30))

            self.assertEqual(t1.replace(tzinfo=None),
                             datetime(2012, 10, 7, 3, 30))

            self.assertEqual(t0.utcoffset(), timedelta(hours=10))
            self.assertEqual(t1.utcoffset(), timedelta(hours=11)) 

def testGapNegativeUTCOffset(self):
        # Test that we don't have a problem around gaps.
        tzname = self._get_tzname('America/Toronto')

        with self._gettz_context(tzname):
            TOR = self.gettz(tzname)

            t0_u = datetime(2011, 3, 13, 6, 30, tzinfo=tz.tzutc())
            t1_u = datetime(2011, 3, 13, 7, 30, tzinfo=tz.tzutc())

            t0 = t0_u.astimezone(TOR)
            t1 = t1_u.astimezone(TOR)

            self.assertEqual(t0.replace(tzinfo=None),
                             datetime(2011, 3, 13, 1, 30))

            self.assertEqual(t1.replace(tzinfo=None),
                             datetime(2011, 3, 13, 3, 30))

            self.assertNotEqual(t0, t1)
            self.assertEqual(t0.utcoffset(), timedelta(hours=-5.0))
            self.assertEqual(t1.utcoffset(), timedelta(hours=-4.0)) 

def testGettz(self):
        # bug 892569
        str(self.gettz('UTC')) 

def gettz(self, tzname):
        # Actual time zone changes are handled by the _gettz_context function
        tzname_map = {'Australia/Sydney': self.TZ_AEST,
                      'America/Toronto': self.TZ_EST,
                      'America/New_York': self.TZ_EST}

        return tz.tzstr(tzname_map[tzname]) 

def testTimeOnlyGettz(self):
        # gettz returns None
        tz_get = self.gettz('Europe/Minsk')
        self.assertIs(dt_time(13, 20, tzinfo=tz_get).utcoffset(), None) 

def testTimeOnlyGettzDST(self):
        # gettz returns None
        tz_get = self.gettz('Europe/Minsk')
        self.assertIs(dt_time(13, 20, tzinfo=tz_get).dst(), None) 

def testTimeOnlyGettzTzName(self):
        tz_get = self.gettz('Europe/Minsk')
        self.assertIs(dt_time(13, 20, tzinfo=tz_get).tzname(), None) 

def testGMTHasNoDaylight(self):
        # tz.tzstr("GMT+2") improperly considered daylight saving time.
        # Issue reported by Lennart Regebro.
        dt = datetime(2007, 8, 6, 4, 10)
        self.assertEqual(tz.gettz("GMT+2").dst(dt), timedelta(0)) 

def testSupportAmbiguityFoldNaive(self):
        tzi = tz.gettz('US/Eastern')

        dt = datetime(2011, 11, 6, 1, 30)

        self.assertTrue(tz.datetime_ambiguous(dt, tz=tzi)) 

def testPickleTzGettz(self):
        self.assertPicklable(tz.gettz('America/New_York')) 

def testSupportAmbiguityFoldAware(self):
        tzi = tz.gettz('US/Eastern')

        dt = datetime(2011, 11, 6, 1, 30, tzinfo=tzi)

        self.assertTrue(tz.datetime_ambiguous(dt)) 

def gettz(self, tzname):
        # Actual time zone changes are handled by the _gettz_context function
        return tz.tzlocal() 

def testExistsNaive(self):
        tzi = tz.gettz('Australia/Sydney')

        dt = datetime(2012, 10, 7, 10, 30)

        self.assertTrue(tz.datetime_exists(dt, tz=tzi)) 

def _test_imaginary_time(self, dt, tzid, exists):
        tzname = self._get_tzname(tzid)
        with self._gettz_context(tzname):
            tzi = self.gettz(tzname)

            self.assertEqual(tz.datetime_exists(dt, tz=tzi), exists) 

def _test_ambiguous_time(self, dt, tzid, ambiguous):
        # This is a test to check that the individual is_ambiguous values
        # on the _tzinfo subclasses work.
        tzname = self._get_tzname(tzid)

        with self._gettz_context(tzname):
            tzi = self.gettz(tzname)

            self.assertEqual(tz.datetime_ambiguous(dt, tz=tzi), ambiguous) 

def gettz(self, tzname):
        raise NotImplementedError 

def gettz(self, tzname):
        raise NotImplementedError 

def testZoneinfoStar(self):
        from dateutil.zoneinfo import gettz
        from dateutil.zoneinfo import gettz_db_metadata
        from dateutil.zoneinfo import rebuild

        zi_all = (gettz, gettz_db_metadata, rebuild)

        for var in zi_all:
            self.assertIsNot(var, None) 

def test_resolve_imaginary_monrovia():
    # See GH #582 - When that is resolved, move this into test_resolve_imaginary
    tzi = tz.gettz('Africa/Monrovia')
    dt = datetime(1972, 1, 7, hour=0, minute=30, second=0, tzinfo=tzi)
    dt_exp = datetime(1972, 1, 7, hour=1, minute=14, second=30, tzinfo=tzi)

    dt_r = tz.resolve_imaginary(dt)
    assert dt_r == dt_exp
    assert dt_r.tzname() == dt_exp.tzname()
    assert dt_r.utcoffset() == dt_exp.utcoffset() 

def testExistsAware(self):
        tzi = tz.gettz('Australia/Sydney')

        dt = datetime(2012, 10, 7, 10, 30, tzinfo=tzi)

        self.assertTrue(tz.datetime_exists(dt)) 

def testTimeOnlyFormatZ(self):
        tz_get = self.gettz('Europe/Minsk')
        t = dt_time(13, 20, tzinfo=tz_get)

        self.assertEqual(t.strftime('%H%M%Z'), '1320')