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BUG: boolean masking with Index objects #17219

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3 changes: 2 additions & 1 deletion pandas/core/common.py
Original file line number Diff line number Diff line change
Expand Up @@ -182,7 +182,8 @@ def _maybe_box_datetimelike(value):


def is_bool_indexer(key):
if isinstance(key, (ABCSeries, np.ndarray)):
from pandas.core.index import Index
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you can use ABCIndexClass here instead (and import were ABCSeries is imported)

if isinstance(key, (ABCSeries, np.ndarray, Index)):
if key.dtype == np.object_:
key = np.asarray(_values_from_object(key))

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