Patch #1524429: Use repr instead of backticks again.
diff --git a/Lib/lib-tk/Tkinter.py b/Lib/lib-tk/Tkinter.py
index a69d4db..630286f 100644
--- a/Lib/lib-tk/Tkinter.py
+++ b/Lib/lib-tk/Tkinter.py
@@ -186,7 +186,7 @@
         if name:
             self._name = name
         else:
-            self._name = 'PY_VAR' + `_varnum`
+            self._name = 'PY_VAR' + repr(_varnum)
             _varnum += 1
         if value != None:
             self.set(value)