How to use the cftime.Datetime360Day function in cftime

def test_pickling(self):
        "Test reversibility of pickling."
        import pickle

        date = Datetime360Day(year=1, month=2, day=3, hour=4, minute=5, second=6, microsecond=7)
        self.assertEqual(date, pickle.loads(pickle.dumps(date)))

def days_per_month_leap_year(date_type, month):
    if date_type is Datetime360Day:
        return [-1, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30][month]
    if date_type in [DatetimeGregorian, DatetimeProlepticGregorian,
                     DatetimeJulian, DatetimeAllLeap]:
        return [-1, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month]
    else:
        return [-1, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month]

d1 = DatetimeProlepticGregorian(1582, 10, 4, 12)
        d2 = real_datetime(1582,10,4,12)
        assert (d1.dayofwk == d2.dayofwk == 0)
        assert (d1.dayofyr == d2.dayofyr == 277)
        # issue 71: negative reference years
        # https://coastwatch.pfeg.noaa.gov/erddap/convert/time.html
        # gives 2446433 (365 days more - is it counting year 0?)
        # however http://aa.usno.navy.mil/data/docs/JulianDate.php gives
        # 2446068, which agrees with us
        units = "days since -4713-01-01T00:00:00Z"
        t = date2num(datetime(1985,1,2), units, calendar="standard")
        assert_almost_equal(t, 2446068)

        # issue #68: allow months since for 360_day calendar
        d = num2date(1, 'months since 0000-01-01 00:00:00', calendar='360_day')
        self.assertEqual(d, Datetime360Day(0,2,1))
        t = date2num(d, 'months since 0000-01-01 00:00:00', calendar='360_day')
        self.assertEqual(t, 1)
        # check that exception is raised if 'months since' used with
        # anything but the 360_day calendar.
        self.assertRaises(ValueError, num2date, \
             1, 'months since 01-01-01',calendar='standard')
        self.assertRaises(ValueError, utime, \
            'months since 01-01-01', calendar='standard')
        # issue #78 - extra digits due to roundoff
        assert(cftime.date2num(cftime.datetime(1, 12, 1, 0, 0, 0, 0, -1, 1), units='days since 01-01-01',calendar='noleap')  == 334.0)
        assert(cftime.date2num(cftime.num2date(1.0,units='days since 01-01-01',calendar='noleap'),units='days since 01-01-01',calendar='noleap') == 1.0)
        assert(cftime.date2num(cftime.DatetimeNoLeap(1980, 1, 1, 0, 0, 0, 0, 6, 1),'days since 1970-01-01','noleap') == 3650.0)

def test_pickling(self):
        "Test reversibility of pickling."
        import pickle

        date = Datetime360Day(year=1, month=2, day=3, hour=4, minute=5, second=6, microsecond=7)
        self.assertEqual(date, pickle.loads(pickle.dumps(date)))

def setUp(self):
        self.date1_365_day = DatetimeNoLeap(-5000, 1, 2, 12)
        self.date2_365_day = DatetimeNoLeap(-5000, 1, 3, 12)
        self.date3_gregorian = DatetimeGregorian(1969,  7, 20, 12)

        # last day of the Julian calendar in the mixed Julian/Gregorian calendar
        self.date4_gregorian = DatetimeGregorian(1582, 10, 4)
        # first day of the Gregorian calendar in the mixed Julian/Gregorian calendar
        self.date5_gregorian = DatetimeGregorian(1582, 10, 15)

        self.date6_proleptic_gregorian = DatetimeProlepticGregorian(1582, 10, 15)

        self.date7_360_day = Datetime360Day(2000, 1, 1)

        self.date8_julian = DatetimeJulian(1582, 10, 4)

        # a datetime.datetime instance (proleptic Gregorian calendar)
        self.datetime_date1 = datetime(1969,  7, 21, 12)

        self.delta = timedelta(hours=25)

self.assertEqual(t, copy.deepcopy(t))

        # issue 442
        units = "days since 0000-01-01 00:00:00"
        # this should fail (year zero not allowed with real-world calendars)
        try:
            date2num(datetime(1, 1, 1), units, calendar='standard')
        except ValueError:
            pass
        # this should not fail (year zero allowed in 'fake' calendars)
        t = date2num(datetime(1, 1, 1), units, calendar='360_day')
        self.assertAlmostEqual(t, 360)
        d = num2date(t, units, calendar='360_day')
        self.assertEqual(d, Datetime360Day(1,1,1))
        d = num2date(0, units, calendar='360_day')
        self.assertEqual(d, Datetime360Day(0,1,1))

        # list around missing dates in Gregorian calendar
        # scalar
        units = 'days since 0001-01-01 12:00:00'
        t1 = date2num(datetime(1582, 10, 4), units, calendar='gregorian')
        t2 = date2num(datetime(1582, 10, 15), units, calendar='gregorian')
        self.assertEqual(t1+1, t2)
        # list
        t1, t2 = date2num([datetime(1582, 10, 4), datetime(1582, 10, 15)], units, calendar='gregorian')
        self.assertEqual(t1+1, t2)
        t1, t2 = date2num([datetime(1582, 10, 4), datetime(1582, 10, 15)], units, calendar='standard')
        self.assertEqual(t1+1, t2)
        # this should fail: days missing in Gregorian calendar
        try:
            t1, t2, t3 = date2num([datetime(1582, 10, 4), datetime(1582, 10, 10), datetime(1582, 10, 15)], units, calendar='standard')
        except ValueError:

def test_num2date_integer_upcast_required():
    numeric_times = np.array([30, 60, 90, 120], dtype=np.int32)
    units = "minutes since 2000-01-01"
    expected = np.array([
        Datetime360Day(2000, 1, 1, 0, 30, 0),
        Datetime360Day(2000, 1, 1, 1, 0, 0),
        Datetime360Day(2000, 1, 1, 1, 30, 0),
        Datetime360Day(2000, 1, 1, 2, 0, 0)
    ])
    result = num2date(numeric_times, units=units, calendar="360_day")
    np.testing.assert_equal(result, expected)

def test_valid_julian_gregorian_mixed_dates(date_type, date_args):
    date_type(*date_args)


@pytest.mark.parametrize(
    'date_args',
    [(1, 2, 3, 4, 5, 6), (10, 2, 3, 4, 5, 6), (100, 2, 3, 4, 5, 6),
     (1000, 2, 3, 4, 5, 6)],
    ids=['1', '10', '100', '1000'])
def test_str_matches_datetime_str(date_type, date_args):
    assert str(date_type(*date_args)) == str(datetime(*date_args))


_EXPECTED_DATE_TYPES = {'noleap': DatetimeNoLeap,
                        '365_day': DatetimeNoLeap,
                        '360_day': Datetime360Day,
                        'julian': DatetimeJulian,
                        'all_leap': DatetimeAllLeap,
                        '366_day': DatetimeAllLeap,
                        'gregorian': DatetimeGregorian,
                        'proleptic_gregorian': DatetimeProlepticGregorian,
                        'standard': DatetimeGregorian}


@pytest.mark.parametrize(
    ['calendar', 'expected_date_type'],
    list(_EXPECTED_DATE_TYPES.items())
)
def test_num2date_only_use_cftime_datetimes_negative_years(
        calendar, expected_date_type):
    result = num2date(-1000., units='days since 0001-01-01', calendar=calendar,
                      only_use_cftime_datetimes=True)

def get_date_type(calendar):
    """Return the cftime date type for a given calendar name."""
    try:
        import cftime
    except ImportError:
        raise ImportError("cftime is required for dates with non-standard calendars")
    else:
        calendars = {
            "noleap": cftime.DatetimeNoLeap,
            "360_day": cftime.Datetime360Day,
            "365_day": cftime.DatetimeNoLeap,
            "366_day": cftime.DatetimeAllLeap,
            "gregorian": cftime.DatetimeGregorian,
            "proleptic_gregorian": cftime.DatetimeProlepticGregorian,
            "julian": cftime.DatetimeJulian,
            "all_leap": cftime.DatetimeAllLeap,
            "standard": cftime.DatetimeGregorian,
        }
        return calendars[calendar]