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import numpy as np import pandas as pd from pandas import ( Categorical, Series, ) import pandas._testing as tm class TestSeriesCount: def test_count(self, datetime_series): assert datetime_series.count() == len(datetime_series) datetime_series[::2] = np.nan assert datetime_series.count() == np.isfinite(datetime_series).sum() def test_count_inf_as_na(self): # GH#29478 ser = Series([pd.Timestamp("1990/1/1")]) msg = "use_inf_as_na option is deprecated" with tm.assert_produces_warning(FutureWarning, match=msg): with pd.option_context("use_inf_as_na", True): assert ser.count() == 1 def test_count_categorical(self): ser = Series( Categorical( [np.nan, 1, 2, np.nan], categories=[5, 4, 3, 2, 1], ordered=True ) ) result = ser.count() assert result == 2
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