On Fri, Dec 3, 2021 at 4:22 AM Nicholas Cole <[email protected]> wrote: > There is nothing that this proposal makes possible that is not already > possible with more explicit code.
It's worth noting that "explicit" does not mean "verbose". For instance, this is completely explicit about what it does: x += 1 It does not conceal what it's doing, yet it uses a very compact notation to say "augmented addition". The proposal in question uses an explicit symbol to indicate that the default should be late-bound. In contrast, a less explicit and much worse proposal might be: "If the argument default defines a mutable object, construct a new one every time", so "def f(x=1):" would be early bound and "def f(x=[]):" would be late-bound. This is implicit behaviour, since it's not stated in the code which one is which. ChrisA _______________________________________________ Python-ideas mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/[email protected]/message/L6PTUVZ33N3EHVCLEGDCDOMB7XGIJRRQ/ Code of Conduct: http://python.org/psf/codeofconduct/
