pandas.core.groupby.DataFrameGroupBy.size

DataFrameGroupBy.size()[source]

Compute group sizes.

Returns

DataFrame or Series: Number of rows in each group as a Series if as_index is True or a DataFrame if as_index is False.

See also

Series.groupby: Apply a function groupby to a Series.
DataFrame.groupby: Apply a function groupby to each row or column of a DataFrame.

© 2008–2021, AQR Capital Management, LLC, Lambda Foundry, Inc. and PyData Development Team
Licensed under the 3-clause BSD License.
https://pandas.pydata.org/pandas-docs/version/1.3.4/reference/api/pandas.core.groupby.DataFrameGroupBy.size.html