nitpick

Author: andrewgsavage

pandas/core/arrays/base.py

@@ -2141,14 +2141,14 @@ def _mode(self, dropna: bool = True) -> Self:
         # error: Incompatible return value type (got "Union[ExtensionArray,
         # ndarray[Any, Any]]", expected "Self")
         return mode(self, dropna=dropna)  # type: ignore[return-value]
-        
+
     def round(self, decimals: int = 0, *args, **kwargs) -> Self:
         # Implementer note: This is a non-optimized default implementation.
         # Implementers are encouraged to override this method to avoid
         # elementwise rounding.
         if not self.dtype._is_numeric or self.dtype._is_boolean:
             raise TypeError(
-                f"Cannot round {self.dtype} dtype as it is non-numeric or boolean"
+                f"Cannot round {type(self)} dtype as it is non-numeric or boolean"
             )
         return self._from_sequence(
             [round(element) if not isna(element) else element for element in self.data],