Python 1.5.2 list sorting bug

[Skip Montanaro]

    >>> a = [3,4,5,1,2]
    >>> a.sort(lambda x,y: x>y)
    >>> a
    [3, 4, 5, 1, 2]
    >>> 

I thought the comparison function was supposed to return -1, 0 or 1.  Yours
only returns 0 or 1.  See:

    http://www.python.org/doc/current/lib/typesseq-mutable.html

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