From: Raymond Hettinger <python@rcn.com>
Date: Wed, 21 Aug 2002 13:20:51 +0000 (+0000)
Subject: Now that __init__ transforms set elements, we know that all of the
X-Git-Tag: v2.3c1~4369
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d9c9151a53b1f0e65370da7ed08d216a5cda8062;p=python

Now that __init__ transforms set elements, we know that all of the
elements are hashable, so we can use dict.update() or dict.copy()
for a C speed Set.copy().
---

diff --git a/Lib/sets.py b/Lib/sets.py
index bb4428064d..eeef0e8087 100644
--- a/Lib/sets.py
+++ b/Lib/sets.py
@@ -133,7 +133,9 @@ class BaseSet(object):
 
     def copy(self):
         """Return a shallow copy of a set."""
-        return self.__class__(self)
+        result = self.__class__([])
+        result._data.update(self._data)
+        return result
 
     __copy__ = copy # For the copy module