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Sat Jul 8 00:10:04 CEST 2006 · http://mail.python.org/pipermail/python-dev/2006-July/067144.html

    Guido> Well, personally I'm for allowing full rebinding semantics but
    Guido> only when a 'global' (or 'nonlocal') statement is used
    Guido> first. Making augmented assignment automatically imply 'global'
    Guido> etc. seems too magical to me.

So, if I understand correctly, in the presence of a global statement search
just goes up the lexical chain looking for the first occurrence of the
variable to modify?

    x = 0
    def f():
        x = 1
        def g():
            global x
            x = 2
            print x
        g()
        print x
    f()
    print x

Today it prints

    2
    1
    2

You're suggesting it will print 

    2
    2
    0

?

Sounds reasonable to me.  If we're talking py3k I'd chuck "global" as a
keyword though and replace it with something like "outer".

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Showing content from http://mail.python.org/pipermail/python-dev/2006-July/067144.html below:

[Python-Dev] Explicit Lexical Scoping (pre-PEP?)