[Python-3000] Fwd: Conventions for annotation consumers (original) (raw)

Paul Prescod paul at prescod.net
Wed Aug 16 18:55:31 CEST 2006

On 8/16/06, Collin Winter <collinw at gmail.com> wrote:

Sorry, I meant "restrict" as in having it stated that the annotations are for typechecking, rather than attempting to support a dozen different uses simultaneously. The annotations would still be free-form, with the semantics up to whoever's implementing the typecheck function, and Python itself wouldn't take any steps to enforce what can or can't go in the annotations.

Nobody every suggested that Python should take any steps to enforce what can or can't go in the annotations! It seems that we're inventing disagreement where there is none. All I ever suggested is a) that we put some guidelines in the spec discouraging people from using built-in Python types for their own private meanings without some kind of discriminator clarifying that they are doing so and b) that we define the shared meanings of a couple of useful types: lists and tuples. This leaves the Python development team the maximum latitude to specify the meanings for the other types (especially type type) later.

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