On Thu, Dec 2, 2021 at 4:40 AM Barry Scott <ba...@barrys-emacs.org> wrote:
>
> On 1 Dec 2021, at 06:16, Chris Angelico <ros...@gmail.com> wrote:
> 3) If "yes" to question 1, would you use it for any/all of (a) mutable
> defaults, (b) referencing things that might have changed, (c)
> referencing other arguments, (d) something else?
>
>
> yes (a)
> What does (b) mean? example please.
> yes (c)
>

global_default = 500
def do_thing(timeout=>global_default): ...

If the global_default timeout changes between function definition and
call, omitting timeout will use the updated global.

Similarly, you could say "file=>sys.stdout" and if code elsewhere
changes sys.stdout, you'll use that.

ChrisA
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