Do not leak method_name in DeprecatedList

CHANGES.rst

@@ -1,3 +1,9 @@
+v4.10.2
+=======
+
+* #365 and bpo-46546: Avoid leaking ``method_name`` in
+  ``DeprecatedList``.
+
 v4.10.1
 =======
 

importlib_metadata/__init__.py

@@ -295,21 +295,15 @@ def wrapped(self, *args, **kwargs):
             self._warn()
             return getattr(super(), method_name)(*args, **kwargs)
 
-        return wrapped
-
-    for method_name in [
-        '__setitem__',
-        '__delitem__',
-        'append',
-        'reverse',
-        'extend',
-        'pop',
-        'remove',
-        '__iadd__',
-        'insert',
-        'sort',
-    ]:
-        locals()[method_name] = _wrap_deprecated_method(method_name)
+        return method_name, wrapped
+
+    locals().update(
+        map(
+            _wrap_deprecated_method,
+            '__setitem__ __delitem__ append reverse extend pop remove '
+            '__iadd__ insert sort'.split(),
+        )
+    )
 
     def __add__(self, other):
         if not isinstance(other, tuple):