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24 lines
456 B
24 lines
456 B
import numpy as np
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from pandas import (
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Categorical,
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Series,
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)
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def test_nunique():
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# basics.rst doc example
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series = Series(np.random.randn(500))
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series[20:500] = np.nan
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series[10:20] = 5000
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result = series.nunique()
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assert result == 11
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def test_nunique_categorical():
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# GH#18051
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ser = Series(Categorical([]))
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assert ser.nunique() == 0
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ser = Series(Categorical([np.nan]))
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assert ser.nunique() == 0
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