From: Tim Peters <tim.peters@gmail.com>
Date: Sun, 25 Aug 2002 20:12:19 +0000 (+0000)
Subject: Gave issubet() and issuperset() major speed boosts.  That's it for now!
X-Git-Tag: v2.3c1~4286
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=cd06eeb20cff9af7d21c87222e1267b80012ce92;p=thirdparty%2FPython%2Fcpython.git

Gave issubet() and issuperset() major speed boosts.  That's it for now!
Someone else may want to tackle the mutating operations similarly.
---

diff --git a/Lib/sets.py b/Lib/sets.py
index 466537387a64..e33464b58e23 100644
--- a/Lib/sets.py
+++ b/Lib/sets.py
@@ -259,8 +259,9 @@ class BaseSet(object):
         self._binary_sanity_check(other)
         if len(self) > len(other):  # Fast check for obvious cases
             return False
+        otherdata = other._data
         for elt in self:
-            if elt not in other:
+            if elt not in otherdata:
                 return False
         return True
 
@@ -269,8 +270,9 @@ class BaseSet(object):
         self._binary_sanity_check(other)
         if len(self) < len(other):  # Fast check for obvious cases
             return False
+        selfdata = self._data
         for elt in other:
-            if elt not in self:
+            if elt not in selfdata:
                 return False
         return True