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BUG: RecursionError with CategoricalIndex.get_indexer #42089

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Merged
jreback merged 1 commit into from
Jun 17, 2021
Merged

BUG: RecursionError with CategoricalIndex.get_indexer #42089

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4 changes: 3 additions & 1 deletion pandas/core/indexes/base.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3410,7 +3410,9 @@ def get_indexer(
if is_categorical_dtype(target.dtype):
# potential fastpath
# get an indexer for unique categories then propagate to codes via take_nd
categories_indexer = self.get_indexer(target.categories)
# Note: calling get_indexer instead of _get_indexer causes
# RecursionError GH#42088
categories_indexer = self._get_indexer(target.categories)
indexer = algos.take_nd(categories_indexer, target.codes, fill_value=-1)

if (not self._is_multi and self.hasnans) and target.hasnans:
Expand Down