pandas / 0.22.0 / generated / pandas.core.window.expanding.count.html /

pandas.core.window.Expanding.count

Expanding.count(**kwargs) [source]
expanding count of number of non-NaN
observations inside provided window.
Returns: same type as input

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https://pandas.pydata.org/pandas-docs/version/0.22.0/generated/pandas.core.window.Expanding.count.html