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BUG: bug in float64index assignment with a non scalar indexer #7587

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Merged
merged 1 commit into from
Jun 27, 2014
Merged

BUG: bug in float64index assignment with a non scalar indexer #7587

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2 changes: 2 additions & 0 deletions doc/source/v0.14.1.txt
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Expand Up @@ -262,3 +262,5 @@ Bug Fixes

- Bug in non-monotonic ``Index.union`` may preserve ``name`` incorrectly (:issue:`7458`)
- Bug in ``DatetimeIndex.intersection`` doesn't preserve timezone (:issue:`4690`)

- Bug in ``Float64Index`` assignment with a non scalar indexer (:issue:`7586`)
2 changes: 1 addition & 1 deletion pandas/core/index.py
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Expand Up @@ -2074,7 +2074,7 @@ def __contains__(self, other):

def get_loc(self, key):
try:
if np.isnan(key):
if np.all(np.isnan(key)):
try:
return self._nan_idxs.item()
except ValueError:
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12 changes: 12 additions & 0 deletions pandas/tests/test_indexing.py
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Expand Up @@ -3684,6 +3684,18 @@ def test_duplicate_ix_returns_series(self):
e = df.loc[0.2, 'a']
tm.assert_series_equal(r, e)

def test_float_index_non_scalar_assignment(self):
df = DataFrame({'a': [1,2,3], 'b': [3,4,5]},index=[1.,2.,3.])
df.loc[df.index[:2]] = 1
expected = DataFrame({'a':[1,1,3],'b':[1,1,5]},index=df.index)
tm.assert_frame_equal(expected, df)

df = DataFrame({'a': [1,2,3], 'b': [3,4,5]},index=[1.,2.,3.])
df2 = df.copy()
df.loc[df.index] = df.loc[df.index]
tm.assert_frame_equal(df,df2)



if __name__ == '__main__':
nose.runmodule(argv=[__file__, '-vvs', '-x', '--pdb', '--pdb-failure'],
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