From b1062fc9d25a2720bfe5ac26151f69ab5f02ba94 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Tue, 31 Mar 1998 17:00:46 +0000
Subject: [PATCH] Correct dumb typo found by kjpylint (stack should be
 self.stack).

---
 Lib/pickle.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/pickle.py b/Lib/pickle.py
index f833d866be6..a5f4b29cc77 100644
--- a/Lib/pickle.py
+++ b/Lib/pickle.py
@@ -693,7 +693,7 @@ class Unpickler:
     dispatch[POP_MARK] = load_pop_mark
 
     def load_dup(self):
-        self.append(stack[-1])
+        self.append(self.stack[-1])
     dispatch[DUP] = load_dup
 
     def load_get(self):