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TST: Added test on dataframe constructor with None #52727

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Merged
merged 2 commits into from
Apr 19, 2023
Merged

TST: Added test on dataframe constructor with None #52727

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575fd57
added test for issue #32218
Gramet Apr 18, 2023
4129ee9
added test for issue #32218
Gramet Apr 18, 2023
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6 changes: 6 additions & 0 deletions pandas/tests/frame/test_constructors.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2639,6 +2639,12 @@ def test_construction_empty_array_multi_column_raises(self):
with pytest.raises(ValueError, match=msg):
DataFrame(data=np.array([]), columns=["a", "b"])

def test_construct_with_strings_and_none(self):
# GH#32218
df = DataFrame(["1", "2", None], columns=["a"], dtype="str")
expected = DataFrame({"a": ["1", "2", None]}, dtype="str")
tm.assert_frame_equal(df, expected)


class TestDataFrameConstructorIndexInference:
def test_frame_from_dict_of_series_overlapping_monthly_period_indexes(self):
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