| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182 |
- import numpy as np
- import pytest
- from pandas import (
- MultiIndex,
- Series,
- date_range,
- )
- import pandas._testing as tm
- def test_xs_datetimelike_wrapping():
- # GH#31630 a case where we shouldn't wrap datetime64 in Timestamp
- arr = date_range("2016-01-01", periods=3)._data._ndarray
- ser = Series(arr, dtype=object)
- for i in range(len(ser)):
- ser.iloc[i] = arr[i]
- assert ser.dtype == object
- assert isinstance(ser[0], np.datetime64)
- result = ser.xs(0)
- assert isinstance(result, np.datetime64)
- class TestXSWithMultiIndex:
- def test_xs_level_series(self, multiindex_dataframe_random_data):
- df = multiindex_dataframe_random_data
- ser = df["A"]
- expected = ser[:, "two"]
- result = df.xs("two", level=1)["A"]
- tm.assert_series_equal(result, expected)
- def test_series_getitem_multiindex_xs_by_label(self):
- # GH#5684
- idx = MultiIndex.from_tuples(
- [("a", "one"), ("a", "two"), ("b", "one"), ("b", "two")]
- )
- ser = Series([1, 2, 3, 4], index=idx)
- return_value = ser.index.set_names(["L1", "L2"], inplace=True)
- assert return_value is None
- expected = Series([1, 3], index=["a", "b"])
- return_value = expected.index.set_names(["L1"], inplace=True)
- assert return_value is None
- result = ser.xs("one", level="L2")
- tm.assert_series_equal(result, expected)
- def test_series_getitem_multiindex_xs(self):
- # GH#6258
- dt = list(date_range("20130903", periods=3))
- idx = MultiIndex.from_product([list("AB"), dt])
- ser = Series([1, 3, 4, 1, 3, 4], index=idx)
- expected = Series([1, 1], index=list("AB"))
- result = ser.xs("20130903", level=1)
- tm.assert_series_equal(result, expected)
- def test_series_xs_droplevel_false(self):
- # GH: 19056
- mi = MultiIndex.from_tuples(
- [("a", "x"), ("a", "y"), ("b", "x")], names=["level1", "level2"]
- )
- ser = Series([1, 1, 1], index=mi)
- result = ser.xs("a", axis=0, drop_level=False)
- expected = Series(
- [1, 1],
- index=MultiIndex.from_tuples(
- [("a", "x"), ("a", "y")], names=["level1", "level2"]
- ),
- )
- tm.assert_series_equal(result, expected)
- def test_xs_key_as_list(self):
- # GH#41760
- mi = MultiIndex.from_tuples([("a", "x")], names=["level1", "level2"])
- ser = Series([1], index=mi)
- with pytest.raises(TypeError, match="list keys are not supported"):
- ser.xs(["a", "x"], axis=0, drop_level=False)
- with pytest.raises(TypeError, match="list keys are not supported"):
- ser.xs(["a"], axis=0, drop_level=False)
|
