--- a/mercurial/pycompat.py	Tue Jul 31 19:37:54 2018 +0200
+++ b/mercurial/pycompat.py	Wed Aug 01 12:57:15 2018 -0700
@@ -331,6 +331,7 @@
 else:
     import cStringIO
 
+    xrange = xrange
     unicode = unicode
     bytechr = chr
     byterepr = repr