10000 ENH: Improve performance for df.__setitem__ with list-like indexers by phofl · Pull Request #38148 · pandas-dev/pandas · GitHub
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ENH: Improve performance for df.__setitem__ with list-like indexers #38148

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Merged
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Nov 29, 2020
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ENH: Improve performance for df.__setitem__ with list-like indexers #38148

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f953ff4
Fix performance problems for df.__setitem__ with lislike indexers
phofl Nov 29, 2020
322feb5
Improve code
phofl Nov 29, 2020
07b1c52
Adress review comments
phofl Nov 29, 2020
d4b76e5
Merge branch 'master' into 37954
jreback Nov 29, 2020
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Merge branch 'master' into 37954
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@jreback
jreback authored Nov 29, 2020
commit d4b76e524d684f114f7993e95408eef6b68ac983
1 change: 1 addition & 0 deletions doc/source/whatsnew/v1.1.5.rst
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Expand Up @@ -24,6 +24,7 @@ Fixed regressions
- Fixed regression in ``df.groupby(..).rolling(..)`` with the resulting :class:`MultiIndex` when grouping by a label that is in the index (:issue:`37641`)
- Fixed regression in :meth:`DataFrame.fillna` not filling ``NaN`` after other operations such as :meth:`DataFrame.pivot` (:issue:`36495`).
- Fixed performance regression for :meth:`DataFrame.__setitem__` with list-like indexers (:issue:`37954`)
- Fixed regression in :meth:`MultiIndex.intersection` returning duplicates when at least one of the indexes had duplicates (:issue:`36915`)

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