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pandas.Series.cummax

Series.cummax(axis=None, skipna=True, *args, **kwargs)[source]

Return cumulative max over requested axis.

Parameters:

axis : {index (0)}

skipna : boolean, default True

Exclude NA/null values. If an entire row/column is NA, the result will be NA

Returns:

cummax : scalar

See also

pandas.core.window.Expanding.max
Similar functionality but ignores NaN values.
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