i++ in Python?

[Skip Montanaro]

    otis> I don't like the fact that if 'j' is some kind of a global counter
    otis> variable, and I'm dealing with multiple threads, it is then, I
    otis> believe, possible for 2 or more threads to execute i = j at the
    otis> same time (i.e. before 'j' had the chance to increase).  

That's what locks are for.

-- 
Skip Montanaro
skip at pobox.com
consulting: http://manatee.mojam.com/~skip/resume.html