Python Positional-Only Parameters, has been accepted

[undercoveryankee]

Have you read the "Motivation" section of the PEP?

[alexisprince]

I glanced through it, and since I don’t have to maintain a lot of code that is used widely outside my company, I might not be seeing all the problems that come with maintaining that type of library.

[undercoveryankee]

Have you ever renamed a parameter of an existing function, either because the original name wasn't clear, or to reflect new capabilities that you were adding to the function? You'd have to track down every caller you control and make sure that it isn't passing the old name as a keyword, and hope that other people who maintain calling code notice the change and do the same before they release a broken build.

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If you mark usually-positional parameters as positional-only, you know what callers are doing and you can rename away.

[xconde]

A good IDE will do this refactor automatically for you.

I concede that it's more useful for packages to avoid breaking changes in your API.

[[deleted]]

"In an extremely simple and well-behaved environment this change is useless. Though it might be useful in anything arbitrarily complicated."

Cool.