8000 BUG/PERF: groupby.transform with unobserved categories by undermyumbrella1 · Pull Request #58084 · pandas-dev/pandas · GitHub
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BUG/PERF: groupby.transform with unobserved categories #58084

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Merged
merged 19 commits into from
May 8, 2024
+120 −19
Merged

BUG/PERF: groupby.transform with unobserved categories #58084

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a52e7fe
Temporarily change observed=True, for groupby.transform
Apr 17, 2024
898fd12
Add tests
Apr 17, 2024
5311004
Add orig_obj in BaseGroupBy hidden attr
Apr 17, 2024
fb548ad
Update tests according to pr comments
Apr 17, 2024
baa1b28
Move orig_obj arg in constructor to last param, to account for possib…
Apr 17, 2024
30013ee
Move calculation of observed grouper to when initialising groupby
Apr 20, 2024
3b9d27b
Only calculate observed_grouper when grouper is absent to account to …
Apr 20, 2024
4221c34
Merge branch 'main' into fix/type_coercion_for_unobserved_categories
Apr 20, 2024
8588a1e
Remove observed exclusions
Apr 20, 2024
8e669d9
Add observed grouper/grouping as cached method
Apr 20, 2024
0d9f89d
change return type to grouping
Apr 20, 2024
84f83ae
Update rst docs
Apr 25, 2024
cbabce0
Update rst docs
Apr 25, 2024
bcca14f
Cache observed grouping/grouper instead of self obj
Apr 29, 2024
f3a3f63
Update according to pr comments
May 2, 2024
58e759f
Merge main
May 2, 2024
7f99b71
Revert unintentional changes
May 7, 2024
4364440
Revert unintentional changes
May 7, 2024
5d63405
Merge branch 'main' into fix/type_coercion_for_unobserved_categories
undermyumbrella1 May 7, 2024
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Update rst docs
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Kei committed Apr 25, 2024
commit cbabce0d88a3bbd8d574ed4631e9279030704273
2 changes: 1 addition & 1 deletion doc/source/whatsnew/v3.0.0.rst
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Expand Up @@ -429,7 +429,7 @@ Groupby/resample/rolling
- Bug in :meth:`.DataFrameGroupBy.quantile` when ``interpolation="nearest"`` is inconsistent with :meth:`DataFrame.quantile` (:issue:`47942`)
- Bug in :meth:`DataFrame.ewm` and :meth:`Series.ewm` when passed ``times`` and aggregation functions other than mean (:issue:`51695`)
- Bug in :meth:`DataFrameGroupBy.apply` that was returning a completely empty DataFrame when all return values of ``func`` were ``None`` instead of returning an empty DataFrame with the original columns and dtypes. (:issue:`57775`)
- Bug in :meth:`DataFrameGroupby.transform` and :meth:`SeriesGroupby.transform` with a reducer and ``observed=False`` coerces dtype (:issue:`55326`)
- Bug in :meth:`DataFrameGroupby.transform` and :meth:`SeriesGroupby.transform` with a reducer and ``observed=False`` that coerces dtype to float when there are unobserved categories. (:issue:`55326`)

Reshaping
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