BUG: groupby.agg/transform casts UDF results#40790

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jreback merged 24 commits intopandas-dev:masterfrom

rhshadrach:dont_cast_udfs

May 3, 2021

Commits on Apr 5, 2021

BUG: groupby.agg/transform downcasts UDF results
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Commits on Apr 10, 2021

Merge branch 'master' of https://github.com/pandas-dev/pandas into dont_cast_udfs
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Reverted behavior change when input and output are the same kind
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Patch via maybe_convert_objects
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Commits on Apr 22, 2021

Commits on Apr 23, 2021

Commits on Apr 25, 2021

Commits on Apr 27, 2021

Fixup
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Fixup
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Commits on Apr 29, 2021

Commits on May 1, 2021