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BUG: fix DataFrame.__setitem__ with 2D object arrays #63184

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BUG: fix DataFrame.__setitem__ with 2D object arrays #63184

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65df683
proposed fix for issue #61026
akkik04 Nov 23, 2025
8a8c670
applied linting
akkik04 Nov 24, 2025
62f7c4b
documenting my changes
akkik04 Nov 24, 2025
aa707b1
fix comment error
akkik04 Nov 24, 2025
c5c8953
fixing pyarrow errors in control flow logic
akkik04 Nov 24, 2025
78f8ce7
new fix
akkik04 Nov 24, 2025
e2ad3fb
trying new patch location and logic & revamped test infra
akkik04 Nov 24, 2025
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documenting my changes
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@akkik04
akkik04 committed Nov 24, 2025
commit 62f7c4b9d99af94a4cefa20aeed1a69e9a96a730
1 change: 1 addition & 0 deletions doc/source/whatsnew/v3.0.0.rst
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Expand Up @@ -1150,6 +1150,7 @@ Indexing
- Bug in :meth:`Series.__setitem__` when assigning boolean series with boolean indexer will raise ``LossySetitemError`` (:issue:`57338`)
- Bug in printing :attr:`Index.names` and :attr:`MultiIndex.levels` would not escape single quotes (:issue:`60190`)
- Bug in reindexing of :class:`DataFrame` with :class:`PeriodDtype` columns in case of consolidated block (:issue:`60980`, :issue:`60273`)
- Bug in :meth:`DataFrame.__setitem__` throwing a ``ValueError`` when setting a column with a 2D object array (:issue:`61026`)
- Bug in :meth:`DataFrame.loc.__getitem__` and :meth:`DataFrame.iloc.__getitem__` with a :class:`CategoricalDtype` column with integer categories raising when trying to index a row containing a ``NaN`` entry (:issue:`58954`)
- Bug in :meth:`Index.__getitem__` incorrectly raising with a 0-dim ``np.ndarray`` key (:issue:`55601`)
- Bug in :meth:`Index.get_indexer` not casting missing values correctly for new string datatype (:issue:`55833`)
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