Panel.cummax() is used to return a DataFrame or Series of the same size containing the cumulative maximum.
Syntax : Panel.cummax (axis = None, skipna = True, * args, ** kwargs)
axis: strong> The index or the name of the axis. 0 is equivalent to None or `index`.
skipna: Exclude NA / null values. If an entire row / column is NA, the result will be NA.
Returns: Cummax of DataFrame or Panel
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