Python pandas.offsets.MonthBegin() Examples

The following are 10 code examples of pandas.offsets.MonthBegin(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module pandas.offsets , or try the search function .
Example #1
Source File: test_period.py    From recruit with Apache License 2.0 4 votes vote down vote up 
def test_sub_offset(self):
        # freq is DateOffset
        for freq in ['A', '2A', '3A']:
            p = Period('2011', freq=freq)
            assert p - offsets.YearEnd(2) == Period('2009', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o

        for freq in ['M', '2M', '3M']:
            p = Period('2011-03', freq=freq)
            assert p - offsets.MonthEnd(2) == Period('2011-01', freq=freq)
            assert p - offsets.MonthEnd(12) == Period('2010-03', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o

        # freq is Tick
        for freq in ['D', '2D', '3D']:
            p = Period('2011-04-01', freq=freq)
            assert p - offsets.Day(5) == Period('2011-03-27', freq=freq)
            assert p - offsets.Hour(24) == Period('2011-03-31', freq=freq)
            assert p - np.timedelta64(2, 'D') == Period(
                '2011-03-30', freq=freq)
            assert p - np.timedelta64(3600 * 24, 's') == Period(
                '2011-03-31', freq=freq)
            assert p - timedelta(-2) == Period('2011-04-03', freq=freq)
            assert p - timedelta(hours=48) == Period('2011-03-30', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(4, 'h'),
                      timedelta(hours=23)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o

        for freq in ['H', '2H', '3H']:
            p = Period('2011-04-01 09:00', freq=freq)
            assert p - offsets.Day(2) == Period('2011-03-30 09:00', freq=freq)
            assert p - offsets.Hour(3) == Period('2011-04-01 06:00', freq=freq)
            assert p - np.timedelta64(3, 'h') == Period(
                '2011-04-01 06:00', freq=freq)
            assert p - np.timedelta64(3600, 's') == Period(
                '2011-04-01 08:00', freq=freq)
            assert p - timedelta(minutes=120) == Period(
                '2011-04-01 07:00', freq=freq)
            assert p - timedelta(days=4, minutes=180) == Period(
                '2011-03-28 06:00', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(3200, 's'),
                      timedelta(hours=23, minutes=30)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o
Example #2
Source File: test_period.py    From recruit with Apache License 2.0 4 votes vote down vote up 
def test_sub_offset_nat(self):
        # freq is DateOffset
        for freq in ['A', '2A', '3A']:
            p = Period('NaT', freq=freq)
            for o in [offsets.YearEnd(2)]:
                assert p - o is NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                assert p - o is NaT

        for freq in ['M', '2M', '3M']:
            p = Period('NaT', freq=freq)
            for o in [offsets.MonthEnd(2), offsets.MonthEnd(12)]:
                assert p - o is NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                assert p - o is NaT

        # freq is Tick
        for freq in ['D', '2D', '3D']:
            p = Period('NaT', freq=freq)
            for o in [offsets.Day(5), offsets.Hour(24), np.timedelta64(2, 'D'),
                      np.timedelta64(3600 * 24, 's'), timedelta(-2),
                      timedelta(hours=48)]:
                assert p - o is NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(4, 'h'),
                      timedelta(hours=23)]:
                assert p - o is NaT

        for freq in ['H', '2H', '3H']:
            p = Period('NaT', freq=freq)
            for o in [offsets.Day(2), offsets.Hour(3), np.timedelta64(3, 'h'),
                      np.timedelta64(3600, 's'), timedelta(minutes=120),
                      timedelta(days=4, minutes=180)]:
                assert p - o is NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(3200, 's'),
                      timedelta(hours=23, minutes=30)]:
                assert p - o is NaT
Example #3
Source File: test_period.py    From vnpy_crypto with MIT License 4 votes vote down vote up 
def test_sub_offset(self):
        # freq is DateOffset
        for freq in ['A', '2A', '3A']:
            p = Period('2011', freq=freq)
            assert p - offsets.YearEnd(2) == Period('2009', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o

        for freq in ['M', '2M', '3M']:
            p = Period('2011-03', freq=freq)
            assert p - offsets.MonthEnd(2) == Period('2011-01', freq=freq)
            assert p - offsets.MonthEnd(12) == Period('2010-03', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o

        # freq is Tick
        for freq in ['D', '2D', '3D']:
            p = Period('2011-04-01', freq=freq)
            assert p - offsets.Day(5) == Period('2011-03-27', freq=freq)
            assert p - offsets.Hour(24) == Period('2011-03-31', freq=freq)
            assert p - np.timedelta64(2, 'D') == Period(
                '2011-03-30', freq=freq)
            assert p - np.timedelta64(3600 * 24, 's') == Period(
                '2011-03-31', freq=freq)
            assert p - timedelta(-2) == Period('2011-04-03', freq=freq)
            assert p - timedelta(hours=48) == Period('2011-03-30', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(4, 'h'),
                      timedelta(hours=23)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o

        for freq in ['H', '2H', '3H']:
            p = Period('2011-04-01 09:00', freq=freq)
            assert p - offsets.Day(2) == Period('2011-03-30 09:00', freq=freq)
            assert p - offsets.Hour(3) == Period('2011-04-01 06:00', freq=freq)
            assert p - np.timedelta64(3, 'h') == Period(
                '2011-04-01 06:00', freq=freq)
            assert p - np.timedelta64(3600, 's') == Period(
                '2011-04-01 08:00', freq=freq)
            assert p - timedelta(minutes=120) == Period(
                '2011-04-01 07:00', freq=freq)
            assert p - timedelta(days=4, minutes=180) == Period(
                '2011-03-28 06:00', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(3200, 's'),
                      timedelta(hours=23, minutes=30)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o
Example #4
Source File: test_period.py    From vnpy_crypto with MIT License 4 votes vote down vote up 
def test_sub_offset_nat(self):
        # freq is DateOffset
        for freq in ['A', '2A', '3A']:
            p = Period('NaT', freq=freq)
            for o in [offsets.YearEnd(2)]:
                assert p - o is tslib.NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                assert p - o is tslib.NaT

        for freq in ['M', '2M', '3M']:
            p = Period('NaT', freq=freq)
            for o in [offsets.MonthEnd(2), offsets.MonthEnd(12)]:
                assert p - o is tslib.NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                assert p - o is tslib.NaT

        # freq is Tick
        for freq in ['D', '2D', '3D']:
            p = Period('NaT', freq=freq)
            for o in [offsets.Day(5), offsets.Hour(24), np.timedelta64(2, 'D'),
                      np.timedelta64(3600 * 24, 's'), timedelta(-2),
                      timedelta(hours=48)]:
                assert p - o is tslib.NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(4, 'h'),
                      timedelta(hours=23)]:
                assert p - o is tslib.NaT

        for freq in ['H', '2H', '3H']:
            p = Period('NaT', freq=freq)
            for o in [offsets.Day(2), offsets.Hour(3), np.timedelta64(3, 'h'),
                      np.timedelta64(3600, 's'), timedelta(minutes=120),
                      timedelta(days=4, minutes=180)]:
                assert p - o is tslib.NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(3200, 's'),
                      timedelta(hours=23, minutes=30)]:
                assert p - o is tslib.NaT
Example #5
Source File: test_period.py    From predictive-maintenance-using-machine-learning with Apache License 2.0 4 votes vote down vote up 
def test_sub_offset(self):
        # freq is DateOffset
        for freq in ['A', '2A', '3A']:
            p = Period('2011', freq=freq)
            assert p - offsets.YearEnd(2) == Period('2009', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o

        for freq in ['M', '2M', '3M']:
            p = Period('2011-03', freq=freq)
            assert p - offsets.MonthEnd(2) == Period('2011-01', freq=freq)
            assert p - offsets.MonthEnd(12) == Period('2010-03', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o

        # freq is Tick
        for freq in ['D', '2D', '3D']:
            p = Period('2011-04-01', freq=freq)
            assert p - offsets.Day(5) == Period('2011-03-27', freq=freq)
            assert p - offsets.Hour(24) == Period('2011-03-31', freq=freq)
            assert p - np.timedelta64(2, 'D') == Period(
                '2011-03-30', freq=freq)
            assert p - np.timedelta64(3600 * 24, 's') == Period(
                '2011-03-31', freq=freq)
            assert p - timedelta(-2) == Period('2011-04-03', freq=freq)
            assert p - timedelta(hours=48) == Period('2011-03-30', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(4, 'h'),
                      timedelta(hours=23)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o

        for freq in ['H', '2H', '3H']:
            p = Period('2011-04-01 09:00', freq=freq)
            assert p - offsets.Day(2) == Period('2011-03-30 09:00', freq=freq)
            assert p - offsets.Hour(3) == Period('2011-04-01 06:00', freq=freq)
            assert p - np.timedelta64(3, 'h') == Period(
                '2011-04-01 06:00', freq=freq)
            assert p - np.timedelta64(3600, 's') == Period(
                '2011-04-01 08:00', freq=freq)
            assert p - timedelta(minutes=120) == Period(
                '2011-04-01 07:00', freq=freq)
            assert p - timedelta(days=4, minutes=180) == Period(
                '2011-03-28 06:00', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(3200, 's'),
                      timedelta(hours=23, minutes=30)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o
Example #6
Source File: test_period.py    From predictive-maintenance-using-machine-learning with Apache License 2.0 4 votes vote down vote up 
def test_sub_offset_nat(self):
        # freq is DateOffset
        for freq in ['A', '2A', '3A']:
            p = Period('NaT', freq=freq)
            for o in [offsets.YearEnd(2)]:
                assert p - o is NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                assert p - o is NaT

        for freq in ['M', '2M', '3M']:
            p = Period('NaT', freq=freq)
            for o in [offsets.MonthEnd(2), offsets.MonthEnd(12)]:
                assert p - o is NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                assert p - o is NaT

        # freq is Tick
        for freq in ['D', '2D', '3D']:
            p = Period('NaT', freq=freq)
            for o in [offsets.Day(5), offsets.Hour(24), np.timedelta64(2, 'D'),
                      np.timedelta64(3600 * 24, 's'), timedelta(-2),
                      timedelta(hours=48)]:
                assert p - o is NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(4, 'h'),
                      timedelta(hours=23)]:
                assert p - o is NaT

        for freq in ['H', '2H', '3H']:
            p = Period('NaT', freq=freq)
            for o in [offsets.Day(2), offsets.Hour(3), np.timedelta64(3, 'h'),
                      np.timedelta64(3600, 's'), timedelta(minutes=120),
                      timedelta(days=4, minutes=180)]:
                assert p - o is NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(3200, 's'),
                      timedelta(hours=23, minutes=30)]:
                assert p - o is NaT
Example #7
Source File: test_period.py    From elasticintel with GNU General Public License v3.0 4 votes vote down vote up 
def test_sub_offset(self):
        # freq is DateOffset
        for freq in ['A', '2A', '3A']:
            p = Period('2011', freq=freq)
            assert p - offsets.YearEnd(2) == Period('2009', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o

        for freq in ['M', '2M', '3M']:
            p = Period('2011-03', freq=freq)
            assert p - offsets.MonthEnd(2) == Period('2011-01', freq=freq)
            assert p - offsets.MonthEnd(12) == Period('2010-03', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o

        # freq is Tick
        for freq in ['D', '2D', '3D']:
            p = Period('2011-04-01', freq=freq)
            assert p - offsets.Day(5) == Period('2011-03-27', freq=freq)
            assert p - offsets.Hour(24) == Period('2011-03-31', freq=freq)
            assert p - np.timedelta64(2, 'D') == Period(
                '2011-03-30', freq=freq)
            assert p - np.timedelta64(3600 * 24, 's') == Period(
                '2011-03-31', freq=freq)
            assert p - timedelta(-2) == Period('2011-04-03', freq=freq)
            assert p - timedelta(hours=48) == Period('2011-03-30', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(4, 'h'),
                      timedelta(hours=23)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o

        for freq in ['H', '2H', '3H']:
            p = Period('2011-04-01 09:00', freq=freq)
            assert p - offsets.Day(2) == Period('2011-03-30 09:00', freq=freq)
            assert p - offsets.Hour(3) == Period('2011-04-01 06:00', freq=freq)
            assert p - np.timedelta64(3, 'h') == Period(
                '2011-04-01 06:00', freq=freq)
            assert p - np.timedelta64(3600, 's') == Period(
                '2011-04-01 08:00', freq=freq)
            assert p - timedelta(minutes=120) == Period(
                '2011-04-01 07:00', freq=freq)
            assert p - timedelta(days=4, minutes=180) == Period(
                '2011-03-28 06:00', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(3200, 's'),
                      timedelta(hours=23, minutes=30)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o
Example #8
Source File: test_period.py    From elasticintel with GNU General Public License v3.0 4 votes vote down vote up 
def test_sub_offset_nat(self):
        # freq is DateOffset
        for freq in ['A', '2A', '3A']:
            p = Period('NaT', freq=freq)
            for o in [offsets.YearEnd(2)]:
                assert p - o is tslib.NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                assert p - o is tslib.NaT

        for freq in ['M', '2M', '3M']:
            p = Period('NaT', freq=freq)
            for o in [offsets.MonthEnd(2), offsets.MonthEnd(12)]:
                assert p - o is tslib.NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                assert p - o is tslib.NaT

        # freq is Tick
        for freq in ['D', '2D', '3D']:
            p = Period('NaT', freq=freq)
            for o in [offsets.Day(5), offsets.Hour(24), np.timedelta64(2, 'D'),
                      np.timedelta64(3600 * 24, 's'), timedelta(-2),
                      timedelta(hours=48)]:
                assert p - o is tslib.NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(4, 'h'),
                      timedelta(hours=23)]:
                assert p - o is tslib.NaT

        for freq in ['H', '2H', '3H']:
            p = Period('NaT', freq=freq)
            for o in [offsets.Day(2), offsets.Hour(3), np.timedelta64(3, 'h'),
                      np.timedelta64(3600, 's'), timedelta(minutes=120),
                      timedelta(days=4, minutes=180)]:
                assert p - o is tslib.NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(3200, 's'),
                      timedelta(hours=23, minutes=30)]:
                assert p - o is tslib.NaT
Example #9
Source File: test_period.py    From twitter-stock-recommendation with MIT License 4 votes vote down vote up 
def test_sub_offset(self):
        # freq is DateOffset
        for freq in ['A', '2A', '3A']:
            p = Period('2011', freq=freq)
            assert p - offsets.YearEnd(2) == Period('2009', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o

        for freq in ['M', '2M', '3M']:
            p = Period('2011-03', freq=freq)
            assert p - offsets.MonthEnd(2) == Period('2011-01', freq=freq)
            assert p - offsets.MonthEnd(12) == Period('2010-03', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o

        # freq is Tick
        for freq in ['D', '2D', '3D']:
            p = Period('2011-04-01', freq=freq)
            assert p - offsets.Day(5) == Period('2011-03-27', freq=freq)
            assert p - offsets.Hour(24) == Period('2011-03-31', freq=freq)
            assert p - np.timedelta64(2, 'D') == Period(
                '2011-03-30', freq=freq)
            assert p - np.timedelta64(3600 * 24, 's') == Period(
                '2011-03-31', freq=freq)
            assert p - timedelta(-2) == Period('2011-04-03', freq=freq)
            assert p - timedelta(hours=48) == Period('2011-03-30', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(4, 'h'),
                      timedelta(hours=23)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o

        for freq in ['H', '2H', '3H']:
            p = Period('2011-04-01 09:00', freq=freq)
            assert p - offsets.Day(2) == Period('2011-03-30 09:00', freq=freq)
            assert p - offsets.Hour(3) == Period('2011-04-01 06:00', freq=freq)
            assert p - np.timedelta64(3, 'h') == Period(
                '2011-04-01 06:00', freq=freq)
            assert p - np.timedelta64(3600, 's') == Period(
                '2011-04-01 08:00', freq=freq)
            assert p - timedelta(minutes=120) == Period(
                '2011-04-01 07:00', freq=freq)
            assert p - timedelta(days=4, minutes=180) == Period(
                '2011-03-28 06:00', freq=freq)

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(3200, 's'),
                      timedelta(hours=23, minutes=30)]:
                with pytest.raises(period.IncompatibleFrequency):
                    p - o
Example #10
Source File: test_period.py    From twitter-stock-recommendation with MIT License 4 votes vote down vote up 
def test_sub_offset_nat(self):
        # freq is DateOffset
        for freq in ['A', '2A', '3A']:
            p = Period('NaT', freq=freq)
            for o in [offsets.YearEnd(2)]:
                assert p - o is tslib.NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                assert p - o is tslib.NaT

        for freq in ['M', '2M', '3M']:
            p = Period('NaT', freq=freq)
            for o in [offsets.MonthEnd(2), offsets.MonthEnd(12)]:
                assert p - o is tslib.NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(365, 'D'),
                      timedelta(365)]:
                assert p - o is tslib.NaT

        # freq is Tick
        for freq in ['D', '2D', '3D']:
            p = Period('NaT', freq=freq)
            for o in [offsets.Day(5), offsets.Hour(24), np.timedelta64(2, 'D'),
                      np.timedelta64(3600 * 24, 's'), timedelta(-2),
                      timedelta(hours=48)]:
                assert p - o is tslib.NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(4, 'h'),
                      timedelta(hours=23)]:
                assert p - o is tslib.NaT

        for freq in ['H', '2H', '3H']:
            p = Period('NaT', freq=freq)
            for o in [offsets.Day(2), offsets.Hour(3), np.timedelta64(3, 'h'),
                      np.timedelta64(3600, 's'), timedelta(minutes=120),
                      timedelta(days=4, minutes=180)]:
                assert p - o is tslib.NaT

            for o in [offsets.YearBegin(2), offsets.MonthBegin(1),
                      offsets.Minute(), np.timedelta64(3200, 's'),
                      timedelta(hours=23, minutes=30)]:
                assert p - o is tslib.NaT