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-rw-r--r--Lib/pickle.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/pickle.py b/Lib/pickle.py
index f833d86..a5f4b29 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):