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BUG: GH3243 accept list of DataFrames as constructor input #3245

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Merged
merged 1 commit into from
Apr 3, 2013
Merged

BUG: GH3243 accept list of DataFrames as constructor input #3245

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2 changes: 1 addition & 1 deletion pandas/core/common.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1028,7 +1028,7 @@ def _possibly_convert_platform(values):

if isinstance(values, (list,tuple)):
values = lib.list_to_object_array(values)
if values.dtype == np.object_:
if getattr(values,'dtype',None) == np.object_:
values = lib.maybe_convert_objects(values)

return values
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9 changes: 9 additions & 0 deletions pandas/tests/test_frame.py
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Expand Up @@ -2040,6 +2040,15 @@ def test_constructor_dtype_list_data(self):
self.assert_(df.ix[1, 0] is None)
self.assert_(df.ix[0, 1] == '2')

def test_constructor_list_frames(self):

# GH 3243
result = DataFrame([DataFrame([])])
self.assert_(result.shape == (1,0))

result = DataFrame([DataFrame(dict(A = range(5)))])
self.assert_(type(result.iloc[0,0]) == DataFrame)

def test_constructor_mixed_dtypes(self):

def _make_mixed_dtypes_df(typ, ad = None):
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