[Python-3000] Types related to Syntax (original) (raw)

Bill Janssen janssen at parc.com
Fri Dec 8 19:35:17 CET 2006

Ron,

I'm wonder how many places in pythons syntax requires or produces specific types. And if listing and organizing these commonly used "syntactically necessary" types would be useful to determine the minimum list of ABC's. (More can always be added later.)

I think a lot of the syntactic niceties have been developed to support various usage patterns, but not every usage pattern has been special-cased with syntax, because some are already supported by the basic language structures. But I agree that looking at the types which define special methods which are mapped to "operators" is a good idea. I just don't see any assurance that it would produce the complete set.

The approach suggested above, takes a much narrower view and would start by what is only currently necessary by the language's current syntax. These are places where you may possibly need to test for type-ness.

To support operators. But there are other reasons to test for type-ness.

Bill

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