--- a/contrib/bdiff-torture.py	Mon Sep 24 14:46:37 2018 -0700
+++ b/contrib/bdiff-torture.py	Thu Jan 17 09:17:12 2019 -0800
@@ -25,7 +25,7 @@
 
         try:
             test1(a, b)
-        except Exception as inst:
+        except Exception:
             reductions += 1
             tries = 0
             a = a2