From fabefc3c5b9e174e4eef2cb351a6ed8c81d721b0 Mon Sep 17 00:00:00 2001
From: Raymond Hettinger <python@rcn.com>
Date: Sat, 21 Jun 2014 11:57:36 -0700
Subject: Issue 21635:  Fix caching in
 difflib.SequenceMatcher.get_matching_blocks().

---
 Lib/difflib.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'Lib/difflib.py')

diff --git a/Lib/difflib.py b/Lib/difflib.py
index 38dfef46191..7eb42a927b0 100644
--- a/Lib/difflib.py
+++ b/Lib/difflib.py
@@ -511,8 +511,8 @@ class SequenceMatcher:
             non_adjacent.append((i1, j1, k1))
 
         non_adjacent.append( (la, lb, 0) )
-        self.matching_blocks = non_adjacent
-        return map(Match._make, self.matching_blocks)
+        self.matching_blocks = list(map(Match._make, non_adjacent))
+        return self.matching_blocks
 
     def get_opcodes(self):
         """Return list of 5-tuples describing how to turn a into b.
-- 
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