BUG: pd.Grouper does not retain PyArrow index dtype #63522
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| """ | ||
| binner, bins, binlabels = self._get_binner_for_time() | ||
| assert len(bins) == len(binlabels) | ||
| if self._timegrouper._arrow_dtype is not None: |
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is there a reason why we have to do a cast-back approach instead of prevent-casting-away earlier on?
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doc/source/whatsnew/vX.X.X.rstfile if fixing a bug or adding a new feature.AGENTS.md.