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TST: Add test for setting with loc on DataFrame with one row #19127

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Jan 10, 2018
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TST: Add test for setting with loc on DataFrame with one row #19127

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7 changes: 7 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 @@ -420,6 +420,13 @@ def test_loc_setitem_consistency(self):
df.loc[:, 'date'] = 1.0
tm.assert_frame_equal(df, expected)

# GH 15494
# setting on frame with single row
df = DataFrame({'date': Series([Timestamp('20180101')])})
df.loc[:, 'date'] = 'string'
expected = DataFrame({'date': Series(['string'])})
tm.assert_frame_equal(df, expected)

def test_loc_setitem_consistency_empty(self):
# empty (essentially noops)
expected = DataFrame(columns=['x', 'y'])
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