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import numpy as np from pandas import Series import pandas._testing as tm class TestInferObjects: def test_infer_objects_series(self): # GH#11221 actual = Series(np.array([1, 2, 3], dtype="O")).infer_objects() expected = Series([1, 2, 3]) tm.assert_series_equal(actual, expected) actual = Series(np.array([1, 2, 3, None], dtype="O")).infer_objects() expected = Series([1.0, 2.0, 3.0, np.nan]) tm.assert_series_equal(actual, expected) # only soft conversions, unconvertable pass thru unchanged actual = Series(np.array([1, 2, 3, None, "a"], dtype="O")).infer_objects() expected = Series([1, 2, 3, None, "a"]) assert actual.dtype == "object" tm.assert_series_equal(actual, expected)
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