typing

Author: jorisvandenbossche

pandas/core/arrays/categorical.py

@@ -2237,7 +2237,8 @@ def _repr_categories(self) -> list[str]:
         if self.categories.dtype == "str":
             # the extension array formatter defaults to boxed=True in format_array
             # override here to boxed=False to be consistent with QUOTE_NONNUMERIC
-            formatter = self.categories._values._formatter(boxed=False)
+            arr: ExtensionArray = self.categories._values
+            formatter = arr._formatter(boxed=False)
 
         format_array = partial(
             fmt.format_array, formatter=formatter, quoting=QUOTE_NONNUMERIC