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BUG: DataFrame.drop raising TypeError when passing empty DatetimeIndex/list #28114

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BUG: DataFrame.drop raising TypeError when passing empty DatetimeIndex/list #28114

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3bf7b26
DataFrame.drop raising TypeError when passing empty DatetimeIndex/list
Aug 23, 2019
53566f6
Merge branch 'master' of https://github.com/pandas-dev/pandas into fi…
Aug 23, 2019
36d19f7
DOC: Update whatsnew
Aug 23, 2019
f32ed62
Small changes for PR #28114
Aug 24, 2019
3d7045c
Merge branch 'master' of https://github.com/pandas-dev/pandas into fi…
Aug 26, 2019
02bb501
Raise KeyError when passing str to DataFrame.drop
Aug 31, 2019
7009e2f
Merge branch 'master' of https://github.com/pandas-dev/pandas into fi…
Sep 3, 2019
25bf949
Made trivial changes for PR28114
Sep 3, 2019
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2 changes: 1 addition & 1 deletion doc/source/whatsnew/v0.25.2.rst
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Expand Up @@ -99,7 +99,7 @@ Sparse
Other
^^^^^

-
- Bug in :meth:`DataFrame.drop` when passing empty :meth:`DatetimeIndex` or :meth:`list`
-

.. _whatsnew_0.252.contributors:
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2 changes: 2 additions & 0 deletions pandas/core/generic.py
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Expand Up @@ -3888,6 +3888,8 @@ def drop(

for axis, labels in axes.items():
if labels is not None:
if isinstance(labels, (list, Index)) and len(labels) == 0:
continue
obj = obj._drop_axis(labels, axis, level=level, errors=errors)

if inplace:
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8 changes: 8 additions & 0 deletions pandas/tests/frame/test_axis_select_reindex.py
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Expand Up @@ -117,6 +117,14 @@ def test_drop(self):
df.drop(labels=df[df.b > 0].index, inplace=True)
assert_frame_equal(df, expected)

# Empty DatetimeIndex/list, GH 27994
df_index = pd.DataFrame(
{"a": [0, 1]},
index=[pd.Timestamp("2019-01-01"), pd.Timestamp("2019-01-01")],
)
assert_frame_equal(df_index.drop([]), df_index)
assert_frame_equal(df_index.drop(df_index[df_index["a"] > 2].index), df_index)

def test_drop_multiindex_not_lexsorted(self):
# GH 11640

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