[Python-ideas] Re: PEP 671: Syntax for late-bound function argument defaults

On Mon, Nov 1, 2021 at 8:56 AM David Mertz, Ph.D. <david.mertz@gmail.com> wrote:

I am not on the SC, so indeed I won't make the decision. But I *will* continue to teach Python. New syntax adds a burden to learners, and it should not be introduced without sufficient benefit to merit that burden. This proposal does not come close to that threshold.

How do you currently teach about mutable argument defaults? With this proposal, it will become trivially easy to have an argument default that's evaluated fresh every time. Does that not count as beneficial? ChrisA