How to use the cftime.DatetimeJulian function in cftime

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)

assert (d1.dayofwk == d2.dayofwk == 5)
        assert (d1.dayofyr == d2.dayofyr == 60)
        d1 = DatetimeGregorian(2020,2,29,23,59,59)
        d2 = real_datetime(2020,2,29,23,59,59)
        assert (d1.dayofwk == d2.dayofwk == 5)
        assert (d1.dayofyr == d2.dayofyr == 60)
        d1 = DatetimeGregorian(2020,2,28,23,59,59)
        d2 = real_datetime(2020,2,28,23,59,59)
        assert (d1.dayofwk == d2.dayofwk == 4)
        assert (d1.dayofyr == d2.dayofyr == 59)
        d1 = DatetimeGregorian(1700,1,1)
        d2 = real_datetime(1700,1,1)
        assert (d1.dayofwk == d2.dayofwk == 4)
        assert (d1.dayofyr == d2.dayofyr == 1)
        # last day of Julian Calendar (Thursday)
        d1 = DatetimeJulian(1582, 10, 4, 12)
        d2 = DatetimeGregorian(1582, 10, 4, 12)
        assert (d1.dayofwk == d2.dayofwk == 3)
        assert (d1.dayofyr == d2.dayofyr == 277)
        # Monday in proleptic gregorian calendar
        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)

pass

    def test_parse_incorrect_unitstring(self):
        for datestr in ("days since2017-05-01 ", "dayssince 2017-05-01 00:00", "days snce 2017-05-01 00:00", "days_since_2017-05-01 00:00",
            "days_since_2017-05-01_00:00"):
            self.assertRaises(
                ValueError, cftime._cftime._dateparse, datestr, 'standard')

            self.assertRaises(
                ValueError, cftime._cftime.num2date, 1, datestr, 'standard')

            self.assertRaises(
                ValueError, cftime._cftime.date2num, datetime(1900, 1, 1, 0), datestr, 'standard')


_DATE_TYPES = [DatetimeNoLeap, DatetimeAllLeap, DatetimeJulian, Datetime360Day,
               DatetimeGregorian, DatetimeProlepticGregorian]


@pytest.fixture(params=_DATE_TYPES)
def date_type(request):
    return request.param


@pytest.fixture(params=[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12])
def month(request):
    return request.param


@pytest.fixture
def days_per_month_non_leap_year(date_type, month):
    if date_type is Datetime360Day:

assert (d1.dayofwk == d2.dayofwk == 5)
        assert (d1.dayofyr == d2.dayofyr == 60)
        d1 = DatetimeGregorian(2020,2,29,23,59,59)
        d2 = real_datetime(2020,2,29,23,59,59)
        assert (d1.dayofwk == d2.dayofwk == 5)
        assert (d1.dayofyr == d2.dayofyr == 60)
        d1 = DatetimeGregorian(2020,2,28,23,59,59)
        d2 = real_datetime(2020,2,28,23,59,59)
        assert (d1.dayofwk == d2.dayofwk == 4)
        assert (d1.dayofyr == d2.dayofyr == 59)
        d1 = DatetimeGregorian(1700,1,1)
        d2 = real_datetime(1700,1,1)
        assert (d1.dayofwk == d2.dayofwk == 4)
        assert (d1.dayofyr == d2.dayofyr == 1)
        # last day of Julian Calendar (Thursday)
        d1 = DatetimeJulian(1582, 10, 4, 12)
        d2 = DatetimeGregorian(1582, 10, 4, 12)
        assert (d1.dayofwk == d2.dayofwk == 3)
        assert (d1.dayofyr == d2.dayofyr == 277)
        # Monday in proleptic gregorian calendar
        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 173: Return the default values of dayofwk and dayofyr
        # when calendar is ''
        d1 = datetimex(1582, 10, 4, 12, calendar='')
        assert (d1.dayofwk == d1.dayofyr == -1)
        d1 = datetimex(2020, 5, 20, calendar='')
        assert (d1.dayofwk == d1.dayofyr == -1)
        d1 = datetimex(2020, 5, 20, dayofwk=-2, dayofyr=-3, calendar='')

dt = self.date1_365_day
        # datetime + timedelta
        self.assertEqual(dt + self.delta, # add 25 hours
                         dt.replace(day=dt.day + 1, hour=dt.hour + 1))

        # timedelta + datetime
        self.assertEqual(self.delta + dt, # add 25 hours
                         dt.replace(day=dt.day + 1, hour=dt.hour + 1))

        # test the Julian/Gregorian transition
        self.assertEqual(self.date4_gregorian + self.delta,
                         DatetimeGregorian(1582, 10, 15, 1))

        # The Julian calendar has no invalid dates
        self.assertEqual(self.date8_julian + self.delta,
                         DatetimeJulian(1582, 10, 5, 1))

        # Test going over the year boundary.
        self.assertEqual(DatetimeGregorian(2000, 11, 1) + timedelta(days=30 + 31),
                         DatetimeGregorian(2001, 1, 1))

        # Year 2000 is a leap year.
        self.assertEqual(DatetimeGregorian(2000, 1, 1) + timedelta(days=31 + 29),
                         DatetimeGregorian(2000, 3, 1))

        # Test the 366_day calendar.
        self.assertEqual(DatetimeAllLeap(1, 1, 1) + timedelta(days=366 * 10 + 31),
                         DatetimeAllLeap(11, 2, 1))

        # The Gregorian calendar has no year zero.
        self.assertEqual(DatetimeGregorian(-1, 12, 31) + self.delta,
                         DatetimeGregorian(1, 1, 1, 1))

dt = self.date1_365_day
        # datetime + timedelta
        self.assertEqual(dt + self.delta, # add 25 hours
                         dt.replace(day=dt.day + 1, hour=dt.hour + 1))

        # timedelta + datetime
        self.assertEqual(self.delta + dt, # add 25 hours
                         dt.replace(day=dt.day + 1, hour=dt.hour + 1))

        # test the Julian/Gregorian transition
        self.assertEqual(self.date4_gregorian + self.delta,
                         DatetimeGregorian(1582, 10, 15, 1))

        # The Julian calendar has no invalid dates
        self.assertEqual(self.date8_julian + self.delta,
                         DatetimeJulian(1582, 10, 5, 1))

        # Test going over the year boundary.
        self.assertEqual(DatetimeGregorian(2000, 11, 1) + timedelta(days=30 + 31),
                         DatetimeGregorian(2001, 1, 1))

        # Year 2000 is a leap year.
        self.assertEqual(DatetimeGregorian(2000, 1, 1) + timedelta(days=31 + 29),
                         DatetimeGregorian(2000, 3, 1))

        # Test the 366_day calendar.
        self.assertEqual(DatetimeAllLeap(1, 1, 1) + timedelta(days=366 * 10 + 31),
                         DatetimeAllLeap(11, 2, 1))

        # The Gregorian calendar has no year zero.
        self.assertEqual(DatetimeGregorian(-1, 12, 31) + self.delta,
                         DatetimeGregorian(1, 1, 1, 1))

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)

result = ut.date2num(value)

        if shape is not None:
            result = result.reshape(shape)

        return result


# Automatically register NetCDFTimeConverter with matplotlib.unit's converter
# dictionary.
if CalendarDateTime not in munits.registry:
    munits.registry[CalendarDateTime] = NetCDFTimeConverter()

CFTIME_TYPES = [cftime.DatetimeNoLeap, cftime.DatetimeAllLeap,
                cftime.DatetimeProlepticGregorian, cftime.DatetimeGregorian,
                cftime.Datetime360Day, cftime.DatetimeJulian]
for date_type in CFTIME_TYPES:
    if date_type not in munits.registry:
        munits.registry[date_type] = NetCDFTimeConverter()

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]