ENH: Enable using a boolean loc in a non-boolean index

Author: Yi Wei

pandas/core/indexing.py

@@ -1127,15 +1127,16 @@ def _validate_key(self, key, axis: Axis):
         # slice of integers (only if in the labels)
         # boolean not in slice and with boolean index
         ax = self.obj._get_axis(axis)
-        if isinstance(key, bool) and not (
-            is_bool_dtype(ax.dtype)
-            or ax.dtype.name == "boolean"
-            or isinstance(ax, MultiIndex)
-            and is_bool_dtype(ax.get_level_values(0).dtype)
-        ):
-            raise KeyError(
-                f"{key}: boolean label can not be used without a boolean index"
-            )
+
+        # if isinstance(key, bool) and not (
+        #     is_bool_dtype(ax.dtype)
+        #     or ax.dtype.name == "boolean"
+        #     or isinstance(ax, MultiIndex)
+        #     and is_bool_dtype(ax.get_level_values(0).dtype)
+        # ):
+        #     raise KeyError(
+        #         f"{key}: boolean label can not be used without a boolean index"
+        #     )
 
         if isinstance(key, slice) and (
             isinstance(key.start, bool) or isinstance(key.stop, bool)
@@ -1306,8 +1307,8 @@ def _getitem_axis(self, key, axis: AxisInt):
         if isinstance(key, slice):
             self._validate_key(key, axis)
             return self._get_slice_axis(key, axis=axis)
-        elif com.is_bool_indexer(key):
-            return self._getbool_axis(key, axis=axis)
+        # elif com.is_bool_indexer(key):
+        #     return self._getbool_axis(key, axis=axis)
         elif is_list_like_indexer(key):
             # an iterable multi-selection
             if not (isinstance(key, tuple) and isinstance(labels, MultiIndex)):