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BUG: Handle concat of series with same name, GH2972 #3058

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Merged
merged 1 commit into from
Mar 16, 2013
Merged

BUG: Handle concat of series with same name, GH2972 #3058

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7 changes: 4 additions & 3 deletions pandas/tools/merge.py
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Original file line number Diff line number Diff line change
Expand Up @@ -947,9 +947,10 @@ def get_result(self):
name = com._consensus_name_attr(self.objs)
return Series(new_data, index=self.new_axes[0], name=name)
elif self._is_series:
data = dict(zip(self.new_axes[1], self.objs))
return DataFrame(data, index=self.new_axes[0],
columns=self.new_axes[1])
data = dict(itertools.izip(xrange(len(self.objs)), self.objs))
tmpdf = DataFrame(data, index=self.new_axes[0])
tmpdf.columns = self.new_axes[1]
return tmpdf
else:
new_data = self._get_concatenated_data()
return self.objs[0]._from_axes(new_data, self.new_axes)
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10 changes: 10 additions & 0 deletions pandas/tools/tests/test_merge.py
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Expand Up @@ -1671,6 +1671,16 @@ def test_concat_bug_1719(self):

self.assertEqual(len(left), len(right))

def test_concat_bug_2972(self):
ts0 = Series(np.zeros(5))
ts1 = Series(np.ones(5))
ts0.name = ts1.name = 'same name'
result = concat([ts0, ts1], axis=1)

expected = DataFrame({0: ts0, 1: ts1})
expected.columns=['same name', 'same name']
assert_frame_equal(result, expected)


class TestOrderedMerge(unittest.TestCase):

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