Memoize _deepcopy_tuple() -- maybe this helps Tommy's problem.

6afff613 · Guido van Rossum · 7c46a920 · 6afff613
Kaydet (Commit) 6afff613 authored Haz 17, 1996 tarafından Guido van Rossum
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Showing with 6 additions and 2 deletions

copy.py Lib/copy.py +6 -2

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--- a/Lib/copy.py
+++ b/Lib/copy.py
@@ -182,8 +182,12 @@ def _deepcopy_tuple(x, memo):
 		pass
 	for i in range(len(x)):
 		if x[i] is not y[i]:
-			return tuple(y)
+			y = tuple(y)
-	return x
+			break
+	else:
+		y = x
+	memo[d] = y
+	return y
 d[types.TupleType] = _deepcopy_tuple
 def _deepcopy_dict(x, memo):