Switch to KeyError pt.2

Author: DriesSchaumont

pandas/core/indexing.py

@@ -2371,7 +2371,7 @@ def convert_missing_indexer(indexer):
         indexer = indexer["key"]
 
         if isinstance(indexer, bool):
-            raise TypeError("cannot use a single bool to index into setitem")
+            raise KeyError("cannot use a single bool to index into setitem")
         return indexer, True
 
     return indexer, False

pandas/tests/frame/indexing/test_indexing.py

@@ -954,9 +954,9 @@ def test_getitem_setitem_ix_bool_keyerror(self):
             df.loc[True]
 
         msg = "cannot use a single bool to index into setitem"
-        with pytest.raises(TypeError, match=msg):
+        with pytest.raises(KeyError, match=msg):
             df.loc[False] = 0
-        with pytest.raises(TypeError, match=msg):
+        with pytest.raises(KeyError, match=msg):
             df.loc[True] = 0
 
     # TODO: rename?  remove?