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Mon Oct 27 12:08:50 EST 2003 · https://mail.python.org/pipermail/python-dev/2003-October/039630.html

On Mon, Oct 27, 2003 at 08:51:16AM -0800, Guido van Rossum wrote:
> The only problem with using :: is a syntactic ambiguity:
> 
>   a[x::y]
> 
> already means something (an extended slice with start=x, no stop, and
> step=y).

I'm not wedded to the :: digraph, I prefer the concept.  :: was nice
because it re-used a similar concept from C++.  No other digraph jumps
out at me.  Some other possibilities (I don't care for any of these):

        Global          Nested
        ------          ------
        :>variable      scope:>variable
        *>variable      scope*>variable
        ->variable      scope->variable
        ?>variable      scope?>variable
        &>variable      scope&>variable

Or perhaps variations using <.

Neal

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[Python-Dev] replacing 'global'