remove ignore[assignment] from pandas/tseries/frequencies.py

Author: natmokval

pandas/tseries/frequencies.py

@@ -174,14 +174,12 @@ def infer_freq(
         return inferer.get_freq()
 
     if isinstance(index, Index) and not isinstance(index, DatetimeIndex):
+        values = index._values
         if index.dtype.kind in "iufcb":
             raise TypeError(
                 f"cannot infer freq from a non-convertible index of dtype {index.dtype}"
             )
-        # error: Incompatible types in assignment (expression has type
-        # "Union[ExtensionArray, ndarray[Any, Any]]", variable has type
-        # "Union[DatetimeIndex, TimedeltaIndex, Series, DatetimeLikeArrayMixin]")
-        index = index._values  # type: ignore[assignment]
+        index = values
 
     if not isinstance(index, DatetimeIndex):
         index = DatetimeIndex(index)