[Python-Dev] PEP 457: Syntax For Positional-Only Parameters (original) (raw)

Benjamin Peterson benjamin at python.org
Wed Oct 9 14:38:46 CEST 2013

2013/10/9 Nick Coghlan <ncoghlan at gmail.com>:

The PEP needs to state more clearly up front (preferably in the title) that it's about reserving a Python level syntax that matches the syntax we worked out for Argument Clinic at PyCon US. Explicitly stating that the requirements that drive the Argument Clinic design are to support the signature of all current CPython builtins and extension modules would also be helpful.

Generally, it needs to be a bit clearer that the intent of the PEP isn't to say "let's do this", it's to be explicit that acceptance of the Argument Clinic PEP severely constrains the design space for possible solutions if we ever did implement Python level support for positional only arguments.

Why does a syntax need to be reserved? Documentation conventions and the syntax of internal tools like argument clinic may be changed any time we like.

-- Regards, Benjamin

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