From: Tim Peters <tim.peters@gmail.com>
Date: Mon, 26 Aug 2002 00:44:07 +0000 (+0000)
Subject: Gave intersection_update a speed boost.
X-Git-Tag: v2.3c1~4285
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=454602f0f7a0adf26904b6a700483c9386646788;p=thirdparty%2FPython%2Fcpython.git

Gave intersection_update a speed boost.
---

diff --git a/Lib/sets.py b/Lib/sets.py
index e33464b58e23..5007709979eb 100644
--- a/Lib/sets.py
+++ b/Lib/sets.py
@@ -380,9 +380,7 @@ class Set(BaseSet):
     def __iand__(self, other):
         """Update a set with the intersection of itself and another."""
         self._binary_sanity_check(other)
-        for elt in self._data.keys():
-            if elt not in other:
-                del self._data[elt]
+        self._data = (self & other)._data
         return self
 
     def intersection_update(self, other):