> On 1 Dec 2021, at 17:59, Chris Angelico <ros...@gmail.com> wrote:
>
> 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.
On a case-by-case basis I might still put defaulting into the body
of the function if that made the intent clearer.
I could see me using @file=sys.stdout.
Barry
>
> ChrisA
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