REGR: Groupby first/last/nth treats None as an observation#38330
Merged
jreback merged 4 commits intopandas-dev:masterfrom Dec 6, 2020
Merged
REGR: Groupby first/last/nth treats None as an observation#38330jreback merged 4 commits intopandas-dev:masterfrom
jreback merged 4 commits intopandas-dev:masterfrom