assertion error fixed in pandas/core/indexes/base.py

Author: ShisuiUzumaki

pandas/core/indexes/base.py

@@ -5024,7 +5024,11 @@ def _can_hold_identifiers_and_holds_name(self, name) -> bool:
 
         https://github.com/pandas-dev/pandas/issues/19764
         """
-        if self.is_object() or is_string_dtype(self.dtype) or self.is_categorical():
+        if (
+            self.is_object()
+            or is_string_dtype(self.dtype)
+            or is_categorical_dtype(self)
+        ):
             return name in self
         return False