Backport PR #31456 on branch 1.0.x (BUG: Groupby.apply wasn't allowing for functions which return lists)#31541

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jschendel merged 1 commit intopandas-dev:1.0.xfrom

meeseeksmachine:auto-backport-of-pr-31456-on-1.0.x

Feb 1, 2020

Commits on Feb 1, 2020

Backport PR #31456: BUG: Groupby.apply wasn't allowing for functions which return lists

MarcoGorelli
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meeseeksmachine
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