On Sun, Nov 14, 2021 at 9:51 AM Chris Angelico <ros...@gmail.com> wrote:
> Also, it's entirely possible that future > versions of Python will have a concept of optional arguments that > don't *have* defaults, As noticed earlier in this thread, it seems it's currently possible to do that with functions written in C. (see bisect in Python 3.8). Sorry to be too lazy to go see how that's done, but as you've been digging into this code I figured you'd already know. So how hard would it be to expose that functionality in pure Python? Maybe that's worth pursuing to get around the "no perfect sentinel" problem. -CHB -- Christopher Barker, PhD (Chris) Python Language Consulting - Teaching - Scientific Software Development - Desktop GUI and Web Development - wxPython, numpy, scipy, Cython
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