CLN: Add explicit deep=False to self.copy() for readability

Author: deniskrds

pandas/core/indexes/base.py

@@ -2980,7 +2980,7 @@ def _get_reconciled_name_object(self, other):
         name = get_op_result_name(self, other)
         if self.name is not name:
             return self.rename(name)
-        return self.copy()
+        return self.copy(deep=False)
 
     @final
     def _validate_sort_keyword(self, sort) -> None:

pandas/core/indexes/multi.py

@@ -4087,7 +4087,7 @@ def _get_reconciled_name_object(self, other) -> MultiIndex:
         names = self._maybe_match_names(other)
         if self.names != names:
             return self.rename(names)
-        return self.copy()
+        return self.copy(deep=False)
 
     def _maybe_match_names(self, other):
         """