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TST: changed behavior of df.loc on multiindex #43879

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TST: changed behavior of df.loc on multiindex #43879

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ea55a09
added test case for issue #43599
gamenerd457 Oct 4, 2021
c317099
Update test_loc.py
gamenerd457 Oct 4, 2021
349ece9
used pytest
gamenerd457 Oct 5, 2021
f001462
updated style
gamenerd457 Oct 5, 2021
663da78
Update test_loc.py
gamenerd457 Oct 5, 2021
e72a2e9
Update test_loc.py
gamenerd457 Oct 5, 2021
b50540b
Update test_loc.py
gamenerd457 Oct 9, 2021
1e20e02
Update test_loc.py
gamenerd457 Oct 9, 2021
6715c71
made the requested changes
gamenerd457 Oct 12, 2021
ddeb357
Update test_loc.py
gamenerd457 Oct 12, 2021
0f772a6
Create test_loc.py
gamenerd457 Oct 12, 2021
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11 changes: 11 additions & 0 deletions pandas/tests/indexing/multiindex/test_loc.py
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Original file line number Diff line number Diff line change
Expand Up @@ -912,3 +912,14 @@ def test_loc_keyerror_rightmost_key_missing():
df = df.set_index(["A", "B"])
with pytest.raises(KeyError, match="^1$"):
df.loc[(100, 1)]
def test_loc_multiindex():
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need a blank line between functions or this will fail linting

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can you be more specific on the naem

and add the issue number as a commetn

df = DataFrame(
index=MultiIndex.from_product([list("abc"), list("de"), list("f")]),
columns=["Val"],
)
result = df.loc[np.s_[:, "d", :]]
expected = DataFrame(
index=MultiIndex.from_product([list("abc"), list("d"), list("f")]),
columns=["Val"],
)
tm.assert_frame_equal(result, expected)
5 changes: 5 additions & 0 deletions pandas/tests/indexing/test_loc.py
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Expand Up @@ -40,6 +40,7 @@
from pandas.tests.indexing.common import Base



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can you revert these

class TestLoc(Base):
def test_loc_getitem_int(self):

Expand Down Expand Up @@ -2857,3 +2858,7 @@ def test_loc_set_multiple_items_in_multiple_new_columns(self):
)

tm.assert_frame_equal(df, expected)