Remove usage of backticks.
diff --git a/Lib/test/test_weakref.py b/Lib/test/test_weakref.py
index f5114b2..1165980 100644
--- a/Lib/test/test_weakref.py
+++ b/Lib/test/test_weakref.py
@@ -51,10 +51,10 @@
         # Live reference:
         o = C()
         wr = weakref.ref(o)
-        `wr`
+        repr(wr)
         # Dead reference:
         del o
-        `wr`
+        repr(wr)
 
     def test_basic_callback(self):
         self.check_basic_callback(C)