gh-107409: set `__wrapped__` attribute in `reprlib.recursive_repr` (#107410)

Co-authored-by: Kumar Aditya <kumaraditya@python.org>

Lib/reprlib.py

@@ -29,6 +29,7 @@ def recursive_repr(fillvalue='...'):
         wrapper.__name__ = getattr(user_function, '__name__')
         wrapper.__qualname__ = getattr(user_function, '__qualname__')
         wrapper.__annotations__ = getattr(user_function, '__annotations__', {})
+        wrapper.__wrapped__ = user_function
         return wrapper
 
     return decorating_function

Lib/test/test_reprlib.py

@@ -765,5 +765,14 @@ class TestRecursiveRepr(unittest.TestCase):
         for name in assigned:
             self.assertIs(getattr(wrapper, name), getattr(wrapped, name))
 
+    def test__wrapped__(self):
+        class X:
+            def __repr__(self):
+                return 'X()'
+            f = __repr__ # save reference to check it later
+            __repr__ = recursive_repr()(__repr__)
+
+        self.assertIs(X.f, X.__repr__.__wrapped__)
+
 if __name__ == "__main__":
     unittest.main()

Misc/NEWS.d/next/Library/2023-07-29-02-36-50.gh-issue-107409.HG27Nu.rst

@@ -0,0 +1 @@
+Set :attr:`!__wrapped__` attribute in :func:`reprlib.recursive_repr`.