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/pandas 0.23

pandas.core.groupby.DataFrameGroupBy.cummax

DataFrameGroupBy.cummax(axis=0, **kwargs) [source]

Cumulative max for each group

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Licensed under the 3-clause BSD License.
http://pandas.pydata.org/pandas-docs/version/0.23.4/generated/pandas.core.groupby.DataFrameGroupBy.cummax.html