dask.dataframe.groupby.DataFrameGroupBy.count

DataFrameGroupBy.count(split_every=None, split_out=1, shuffle=None)

Compute count of group, excluding missing values.

This docstring was copied from pandas.core.groupby.groupby.GroupBy.count.

Some inconsistencies with the Dask version may exist.

Returns:
Series or DataFrame

Count of values within each group.

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.