diff --git a/Lib/_weakrefset.py b/Lib/_weakrefset.py
index 304c66f59bd..7a84823622e 100644
--- a/Lib/_weakrefset.py
+++ b/Lib/_weakrefset.py
@@ -194,3 +194,6 @@ def union(self, other):
 
     def isdisjoint(self, other):
         return len(self.intersection(other)) == 0
+
+    def __repr__(self):
+        return repr(self.data)
diff --git a/Lib/test/test_weakset.py b/Lib/test/test_weakset.py
index 691b95e77c6..569facdd30c 100644
--- a/Lib/test/test_weakset.py
+++ b/Lib/test/test_weakset.py
@@ -434,6 +434,9 @@ def test_len_race(self):
             self.assertGreaterEqual(n2, 0)
             self.assertLessEqual(n2, n1)
 
+    def test_repr(self):
+        assert repr(self.s) == repr(self.s.data)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Misc/NEWS.d/next/Library/2019-05-19-06-54-26.bpo-36949.jBlG9F.rst b/Misc/NEWS.d/next/Library/2019-05-19-06-54-26.bpo-36949.jBlG9F.rst
new file mode 100644
index 00000000000..e4eeb4010a2
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2019-05-19-06-54-26.bpo-36949.jBlG9F.rst
@@ -0,0 +1 @@
+Implement __repr__ for WeakSet objects.