ENH: Ensure attrs are copied from other in Series arithmetic operations. Moved from base.py to series.py

Author: fbourgey

pandas/core/base.py

@@ -1463,8 +1463,6 @@ def _duplicated(self, keep: DropKeep = "first") -> npt.NDArray[np.bool_]:
         return algorithms.duplicated(arr, keep=keep)
 
     def _arith_method(self, other, op):
-        if not getattr(self, "attrs", None) and getattr(other, "attrs", None):
-            self.__finalize__(other)
         res_name = ops.get_op_result_name(self, other)
 
         lvalues = self._values

pandas/core/series.py

@@ -5888,6 +5888,8 @@ def _logical_method(self, other, op):
 
     def _arith_method(self, other, op):
         self, other = self._align_for_op(other)
+        if not getattr(self, "attrs", None) and getattr(other, "attrs", None):
+            self.attrs = other.attrs
         return base.IndexOpsMixin._arith_method(self, other, op)
 
     def _align_for_op(self, right, align_asobject: bool = False):