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BUG: bug in taking all on a multi-index when only level 0 is specified (GH6788) #6790

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Merged
merged 1 commit into from
Apr 3, 2014
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BUG: bug in taking all on a multi-index when only level 0 is specified (GH6788) #6790

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4 changes: 4 additions & 0 deletions pandas/core/indexing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1040,6 +1040,10 @@ def _convert_to_indexer(self, obj, axis=0, is_setter=False):
level = 0
_, indexer = labels.reindex(objarr, level=level)

# take all
if indexer is None:
indexer = np.arange(len(labels))

check = labels.levels[0].get_indexer(objarr)
else:
level = None
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11 changes: 11 additions & 0 deletions pandas/tests/test_indexing.py
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Expand Up @@ -1128,6 +1128,17 @@ def test_loc_multiindex(self):
xp = mi_int.ix[4]
assert_frame_equal(rs,xp)

# GH6788
# multi-index indexer is None (meaning take all)
attributes = ['Attribute' + str(i) for i in range(1)]
attribute_values = ['Value' + str(i) for i in range(5)]

index = MultiIndex.from_product([attributes,attribute_values])
df = 0.1 * np.random.randn(10, 1 * 5) + 0.5
df = DataFrame(df, columns=index)
result = df[attributes]
assert_frame_equal(result, df)

def test_series_getitem_multiindex(self):

# GH 6018
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