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-rw-r--r--Lib/copy.py8
1 files changed, 3 insertions, 5 deletions
diff --git a/Lib/copy.py b/Lib/copy.py
index bb8840ed54..383609bc64 100644
--- a/Lib/copy.py
+++ b/Lib/copy.py
@@ -221,17 +221,15 @@ def _deepcopy_list(x, memo):
d[list] = _deepcopy_list
def _deepcopy_tuple(x, memo):
- y = []
- for a in x:
- y.append(deepcopy(a, memo))
+ y = [deepcopy(a, memo) for a in x]
# We're not going to put the tuple in the memo, but it's still important we
# check for it, in case the tuple contains recursive mutable structures.
try:
return memo[id(x)]
except KeyError:
pass
- for i in range(len(x)):
- if x[i] is not y[i]:
+ for k, j in zip(x, y):
+ if k is not j:
y = tuple(y)
break
else: