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TST: setting value at MultiIndex slice using .loc #37513

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merged 2 commits into from
Oct 31, 2020
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Merged

TST: setting value at MultiIndex slice using .loc #37513

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7e08a95
TST: add test from OP
arw2019 Oct 30, 2020
4be231a
CI: fix inconsistent usage of pd namespace
arw2019 Oct 30, 2020
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18 changes: 18 additions & 0 deletions pandas/tests/indexing/test_loc.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1062,6 +1062,24 @@ def test_loc_getitem_access_none_value_in_multiindex(self):
result = ser.loc[("Level1", "Level2_a")]
assert result == 1

def test_loc_setitem_multiindex_slice(self):
# GH 34870

index = pd.MultiIndex.from_tuples(
zip(
["bar", "bar", "baz", "baz", "foo", "foo", "qux", "qux"],
["one", "two", "one", "two", "one", "two", "one", "two"],
),
names=["first", "second"],
)

result = Series([1, 1, 1, 1, 1, 1, 1, 1], index=index)
result.loc[("baz", "one"):("foo", "two")] = 100

expected = Series([1, 1, 100, 100, 100, 100, 1, 1], index=index)

tm.assert_series_equal(result, expected)


def test_series_loc_getitem_label_list_missing_values():
# gh-11428
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