pandas.core.groupby.GroupBy.size¶

GroupBy.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.