8000 COMPAT: Emit warning when groupby by a tuple by TomAugspurger · Pull Request #18731 · pandas-dev/pandas · GitHub
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COMPAT: Emit warning when groupby by a tuple #18731

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Merged
merged 12 commits into from
Dec 18, 2017
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Merge remote-tracking branch 'upstream/master' into warn-groupby-tuple
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TomAugspurger committed Dec 18, 2017
commit 3057aabaf6aae34e9bd902bde7bf00fa8e57276a
1 change: 1 addition & 0 deletions doc/source/whatsnew/v0.22.0.txt
Original file line number Diff line number Diff line change
Expand Up @@ -207,6 +207,7 @@ Deprecations
In the future, a tuple passed to ``'by'`` will always refer to a single key
that is the actual tuple, instead of treating the tuple as multiple keys. To
retain the previous behavior, use a list instead of a tuple (:issue:`18314`)
- ``Series.valid`` is deprecated. Use :meth:`Series.dropna` instead (:issue:`18800`).

.. _whatsnew_0220.prior_deprecations:

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