pandas.core.groupby.GroupBy.nth

Take the nth row from each group if n is an int, or a subset of rows if n is a list of ints.

If dropna, will take the nth non-null row, dropna is either ‘all’ or ‘any’; this is equivalent to calling dropna(how=dropna) before the groupby.

param n

int or list of ints

a single nth value for the row or a list of nth values

param dropna

None or str, optional

apply the specified dropna operation before counting which row is the nth row. Needs to be None, ‘any’ or ‘all’

return

Series or DataFrame N-th value within each group.

Warning

This feature is currently unsupported by Intel Scalable Dataframe Compiler