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Pandas · Method

DataFrameGroupBy.agg

DataFrameGroupBy.agg calculates one or more values for each group. It supports built-in names, custom functions, lists, dictionaries, and named output columns.

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Syntax

DataFrameGroupBy.agg(func=None, *args, engine=None, engine_kwargs=None, **kwargs)

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  • DataFrame.groupby.apply
  • DataFrame.groupby.transform
  • DataFrame.aggregate
  • Aggregation
  • Named aggregation

Source: pandas.api.typing.DataFrameGroupBy.agg — pandas 3.1.0 documentation. Checked 2026-11-03.