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from pandas import ( DataFrame, Series, ) import pandas._testing as tm class TestDataFrameCount: def test_count(self): # corner case frame = DataFrame() ct1 = frame.count(1) assert isinstance(ct1, Series) ct2 = frame.count(0) assert isinstance(ct2, Series) # GH#423 df = DataFrame(index=range(10)) result = df.count(1) expected = Series(0, index=df.index) tm.assert_series_equal(result, expected) df = DataFrame(columns=range(10)) result = df.count(0) expected = Series(0, index=df.columns) tm.assert_series_equal(result, expected) df = DataFrame() result = df.count() expected = Series(dtype="int64") tm.assert_series_equal(result, expected) def test_count_objects(self, float_string_frame): dm = DataFrame(float_string_frame._series) df = DataFrame(float_string_frame._series) tm.assert_series_equal(dm.count(), df.count()) tm.assert_series_equal(dm.count(1), df.count(1))
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