Correct a definite typo ('mem' should be 'memo').

diff --git a/Lib/pickle.py b/Lib/pickle.py
index 33a1e778c476b323930545d11b29f38ec6ed0662..f833d866be6505d36c50e4c8818117cdfb9f8b5e 100644 (file)
--- a/Lib/pickle.py
+++ b/Lib/pickle.py
@@ -288,7 +288,7 @@ class Pickler:
                 write(POP_MARK + self.get(memo[d][0]))
                 return
            
-            write(POP * (len(object) + 1) + self.get(mem[d][0]))
+            write(POP * (len(object) + 1) + self.get(memo[d][0]))
             return
 
         memo_len = len(memo)