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def cmp_to_key(mycmp):
    'Convert a cmp= function into a key= function'
    class K(object):
        def __init__(self, obj, *args):
            self.obj = obj
        def __lt__(self, other):
            return mycmp(self.obj, other.obj) < 0
        def __gt__(self, other):
            return mycmp(self.obj, other.obj) > 0
        def __eq__(self, other):
            return mycmp(self.obj, other.obj) == 0
        def __le__(self, other):
            return mycmp(self.obj, other.obj) <= 0  
        def __ge__(self, other):
            return mycmp(self.obj, other.obj) >= 0
        def __ne__(self, other):
            return mycmp(self.obj, other.obj) != 0
    return K

Diff to Previous Revision

--- revision 4 2010-03-31 17:05:26
+++ revision 5 2010-04-04 23:28:40
@@ -1,4 +1,4 @@
-def CmpToKey(mycmp):
+def cmp_to_key(mycmp):
     'Convert a cmp= function into a key= function'
     class K(object):
         def __init__(self, obj, *args):

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