def test_take_fill_value(self):
# GH#12631
idx = DatetimeIndex(["2011-01-01", "2011-02-01", "2011-03-01"], name="xxx")
result = idx.take(np.array([1, 0, -1]))
expected = DatetimeIndex(["2011-02-01", "2011-01-01", "2011-03-01"], name="xxx")
tm.assert_index_equal(result, expected)
# fill_value
result = idx.take(np.array([1, 0, -1]), fill_value=True)
expected = DatetimeIndex(["2011-02-01", "2011-01-01", "NaT"], name="xxx")
tm.assert_index_equal(result, expected)
# allow_fill=False
result = idx.take(np.array([1, 0, -1]), allow_fill=False, fill_value=True)
expected = DatetimeIndex(["2011-02-01", "2011-01-01", "2011-03-01"], name="xxx")
tm.assert_index_equal(result, expected)
msg = (
"When allow_fill=True and fill_value is not None, "
"all indices must be >= -1"
)
with pytest.raises(ValueError, match=msg):
idx.take(np.array([1, 0, -2]), fill_value=True)
with pytest.raises(ValueError, match=msg):
idx.take(np.array([1, 0, -5]), fill_value=True)
msg = "out of bounds"
with pytest.raises(IndexError, match=msg):
idx.take(np.array([1, -5]))
def test_take(self):
dates = [
datetime(2010, 1, 1, 14),
datetime(2010, 1, 1, 15),
datetime(2010, 1, 1, 17),
datetime(2010, 1, 1, 21)
]
for tz in [None, 'US/Eastern', 'Asia/Tokyo']:
idx = DatetimeIndex(start='2010-01-01 09:00',
end='2010-02-01 09:00',
freq='H',
tz=tz,
name='idx')
expected = DatetimeIndex(dates, freq=None, name='idx', tz=tz)
taken1 = idx.take([5, 6, 8, 12])
taken2 = idx[[5, 6, 8, 12]]
for taken in [taken1, taken2]:
tm.assert_index_equal(taken, expected)
tm.assertIsInstance(taken, DatetimeIndex)
self.assertIsNone(taken.freq)
self.assertEqual(taken.tz, expected.tz)
self.assertEqual(taken.name, expected.name)
def test_take_nan_first_datetime(self):
index = DatetimeIndex(
[pd.NaT, Timestamp("20130101"),
Timestamp("20130102")])
result = index.take([-1, 0, 1])
expected = DatetimeIndex([index[-1], index[0], index[1]])
tm.assert_index_equal(result, expected)
def test_take2(self, tz):
dates = [datetime(2010, 1, 1, 14), datetime(2010, 1, 1, 15),
datetime(2010, 1, 1, 17), datetime(2010, 1, 1, 21)]
idx = DatetimeIndex(start='2010-01-01 09:00',
end='2010-02-01 09:00', freq='H', tz=tz,
name='idx')
expected = DatetimeIndex(dates, freq=None, name='idx', tz=tz)
taken1 = idx.take([5, 6, 8, 12])
taken2 = idx[[5, 6, 8, 12]]
for taken in [taken1, taken2]:
tm.assert_index_equal(taken, expected)
assert isinstance(taken, DatetimeIndex)
assert taken.freq is None
assert taken.tz == expected.tz
assert taken.name == expected.name
def test_take2(self, tz):
dates = [datetime(2010, 1, 1, 14), datetime(2010, 1, 1, 15),
datetime(2010, 1, 1, 17), datetime(2010, 1, 1, 21)]
idx = DatetimeIndex(start='2010-01-01 09:00',
end='2010-02-01 09:00', freq='H', tz=tz,
name='idx')
expected = DatetimeIndex(dates, freq=None, name='idx', tz=tz)
taken1 = idx.take([5, 6, 8, 12])
taken2 = idx[[5, 6, 8, 12]]
for taken in [taken1, taken2]:
tm.assert_index_equal(taken, expected)
assert isinstance(taken, DatetimeIndex)
assert taken.freq is None
assert taken.tz == expected.tz
assert taken.name == expected.name
def test_take(self):
dates = [datetime(2010, 1, 1, 14), datetime(2010, 1, 1, 15),
datetime(2010, 1, 1, 17), datetime(2010, 1, 1, 21)]
for tz in [None, 'US/Eastern', 'Asia/Tokyo']:
idx = DatetimeIndex(start='2010-01-01 09:00',
end='2010-02-01 09:00', freq='H', tz=tz,
name='idx')
expected = DatetimeIndex(dates, freq=None, name='idx', tz=tz)
taken1 = idx.take([5, 6, 8, 12])
taken2 = idx[[5, 6, 8, 12]]
for taken in [taken1, taken2]:
tm.assert_index_equal(taken, expected)
tm.assertIsInstance(taken, DatetimeIndex)
self.assertIsNone(taken.freq)
self.assertEqual(taken.tz, expected.tz)
self.assertEqual(taken.name, expected.name)