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

Anders J. Munch ajm at flonidan.dk
Wed Oct 9 16:45:44 CEST 2013

Larry Hastings wrote:

I look forward to an alternate suggestion. This is the least-bad thing I could come up with.

How about a naming convention instead, where using a leading underscore in a parameter name is a hint that it is positional-only.

For example, the docstring of sorted: sorted(iterable, key=None, reverse=False) --> new sorted list would become: sorted(_iterable, key=None, reverse=False) --> new sorted list

It seems more intuitive than the slash, and requires no change to the toolchain.

Although, it may collide slightly with code that uses a leading underscore to indicate "implementation detail" for a parameter with a default value, but a quick scan of the std. lib. suggests that that's very rare.

regards, Anders

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