commit b8940393e9be5be09920f28bfea0049e4255354b
author Tim Peters <tim.peters@gmail.com> Sun Aug 25 19:50:43 2002 +0000
committer Tim Peters <tim.peters@gmail.com> Sun Aug 25 19:50:43 2002 +0000
tree 242bf9c85dc39c70947d5dd99e6b60f6f9f6404c
parent 334b4a5c393fba0b3cf37ed88b36cbd554a24f4f

Gave __sub__/difference a factor of 2-5 speed boost.

Lib/sets.py

diff --git a/Lib/sets.py b/Lib/sets.py
index bf3ff4d..4665373 100644
--- a/Lib/sets.py
+++ b/Lib/sets.py
@@ -223,9 +223,10 @@
             return NotImplemented
         result = self.__class__()
         data = result._data
+        otherdata = other._data
         value = True
         for elt in self:
-            if elt not in other:
+            if elt not in otherdata:
                 data[elt] = value
         return result