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BUG: If Series is called with no arguments, let it have a RangeIndex (#16737) #16961

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BUG: If Series is called with no arguments, let it have a RangeIndex (#16737) #16961

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2 changes: 2 additions & 0 deletions pandas/core/series.py
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Original file line number Diff line number Diff line change
Expand Up @@ -173,6 +173,8 @@ def __init__(self, data=None, index=None, dtype=None, name=None,

if data is None:
data = {}
if index is None:
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@jreback jreback Jul 15, 2017

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needs a test
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@alanbato alanbato Jul 16, 2017

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Should I add the test code in the following test? Or somewhere else?
Is setting check_index_type=True enough?

def test_constructor_empty(self): empty = Series() empty2 = Series([]) # the are Index() and RangeIndex() which don't compare type equal # but are just .equals assert_series_equal(empty, empty2, check_index_type=False) empty = Series(index=lrange(10)) empty2 = Series(np.nan, index=lrange(10)) assert_series_equal(empty, empty2)
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@jreback jreback Jul 17, 2017

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you prob just need to remove the check_index_type=False and then your change should work
index = _default_index(0)
if dtype is not None:
dtype = self._validate_dtype(dtype)

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