BUG: use arrow backend for digits references in str.replace
#62872
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Also tests for ambiguous reference \d + another literal as digit.
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mroeschke
approved these changes
Oct 27, 2025
mroeschke
reviewed
Oct 27, 2025
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| Strings | ||
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| - Bug in :meth:`Series.str.replace` raising an error on valid group references (``\1``, ``\2``, etc.) on series converted to PyArrow backend dtype (:issue:`62653`) |
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Just noting if there will be a 2.3.4 release, this PR should probably be backported
mroeschke
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Thanks @Alvaro-Kothe |
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…-dev#62872) Co-authored-by: zishan044 <winchesterfelix007@gmail.com> (cherry picked from commit a947b55)
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doc/source/whatsnew/vX.X.X.rstfile if fixing a bug or adding a new feature.I also had to update some tests, because PyArrow replacement differs from python
remodule, where inre, if you use a reference with another digit (e.g.,\10) it is considered invalid. In PyArrow, it's considered reference + literal.Additionally, I could only reproduce the error reported in #62653 when converting with
.convert_dtypes(dtype_backend="pyarrow"), constructing the series with an arrow dtype didn't reproduce.