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pandas.core.window.Expanding.count

Expanding.count(**kwargs) [source]

The expanding count of any non-NaN observations inside the window.

Returns:

Series or DataFrame

Returned object type is determined by the caller of the expanding calculation.

See also

pandas.Series.expanding
Calling object with Series data
pandas.DataFrame.expanding
Calling object with DataFrames
pandas.DataFrame.count
Count of the full DataFrame

Examples

>>> s = pd.Series([2, 3, np.nan, 10])
>>> s.rolling(2).count()
0    1.0
1    2.0
2    1.0
3    1.0
dtype: float64
>>> s.rolling(3).count()
0    1.0
1    2.0
2    2.0
3    2.0
dtype: float64
>>> s.rolling(4).count()
0    1.0
1    2.0
2    2.0
3    3.0
dtype: float64

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Licensed under the 3-clause BSD License.
http://pandas.pydata.org/pandas-docs/version/0.23.4/generated/pandas.core.window.Expanding.count.html