[Python-Dev] Switch statement (original) (raw)

Guido van Rossum guido at python.org
Fri Jun 23 19:23:29 CEST 2006

On 6/23/06, Alex Martelli <aleaxit at gmail.com> wrote:

On 6/22/06, Guido van Rossum <guido at python.org> wrote: > Independent from this, I wonder if we also need static names of the form > > static = > > which would be similar to > > = static () > > but also prevents from being assigned to elsewhere in the same scope.

Lovely!!! Definitely +1. Could perhaps THIS use of static be allowed even outside of a def? I'd just love to have such static names in modules and classes, too (with runtime checks of errant assignments, if needed).

It would provide no speed advantage, and I don't see how the staticness would be transferred upon import into another module. Runtime checks of errant assignments would be relatively easy: trap this in the module setattr operation, and henceforth let module.dict return a read-only dict wrapper. (Except that would break "exec E in globals()". I guess it would have to be a dict wrapper that only makes those specific keys read-only...)

-- --Guido van Rossum (home page: http://www.python.org/~guido/)

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