BUG: Filter/transform fail in some cases when multi-grouping with a datetime-like key#10124

Merged

jreback merged 1 commit intopandas-dev:masterfrom

evanpw:issue_10114

Jul 30, 2015

Commits on Jul 29, 2015

BUG: Filter/transform fail in some cases when multi-grouping with a datetime-like key (GH #10114)
Evan Wright
committed