From f39c3d8ea5629df2034d8a29566cfefcb0a1e039 Mon Sep 17 00:00:00 2001
From: Dustin Ingram <di@users.noreply.github.com>
Date: Wed, 12 Feb 2020 14:42:30 -0600
Subject: [PATCH] Fail on duplicates between lists

---
 verify.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/verify.py b/verify.py
index 38ddd0d..6d55ad1 100644
--- a/verify.py
+++ b/verify.py
@@ -86,6 +86,7 @@ def check_for_intersection(filename_a, filename_b):
         print("The following domains appear in both lists:")
         for line in sorted(intersection):
             print("* {}".format(line))
+        sys.exit(1)
 
 
 if __name__ == "__main__":