Replacement for keyword 'global' good idea? (e.g. 'modulescope' or 'module' better?)
rrr at ronadam.com
Tue Aug 16 20:31:05 CEST 2005
Antoon Pardon wrote:
> I disagree here. The problem with "global", at least how it is
> implemented in python, is that you only have access to module
> scope and not to intermediate scopes.
> I also think there is another possibility. Use a symbol to mark
> the previous scope. e.g. x would be the variable in local scope.
> @.x would be the variable one scope up. @. at .x would be the
> variable two scopes up etc.
Looks like what you want is easier introspection and the ability to get
the parent scope from it in a simple way. Maybe something like a
builtin '__self__' name that contains the information, then a possible
short 'sugar' method to access it. '__self__.__parent__', would become
@ in your example and '__self__.__perent__.__self__.__parent__' could
become @. at .
Somthing other than '@' would be better I think. A bare leading '.' is
another possiblity. Then '..x' would be the x two scopes up.
This isn't the same as globals. Globals work the way they do because if
they weren't automatically visible to all objects in a module you
wouldn't be able to access any builtin functions or class's without
declaring them as global (or importing them) in every function or class
that uses them.
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