Am Fr., 11. Juni 2021 um 14:51 Uhr schrieb Ricky Teachey <ri...@teachey.org
>:
> I think this idea is promising but instead of doing it by adding new
> syntax and a totally different object, why not attach a __templates__
> dunder member to every string but only OPTIONALLY populate it when a string
> is formatted?
>
>
I am very happy that you think this is promising.
Changing the interface of every string in Python feels much too big for me.
I don't dare to think about it.
I have concerns that it could have negative impacts on parts which I am not
aware of.
> For every regular string it would just be None:
>
> >>> "".__template__
> >>>
>
> But if you create a string using an f string, you can provide a directive,
> as part of the format specification mini language, to store it:
>
> >>> s = f"{foo!t}"
>
> ...or a directive at the front of the string to store all the f string
> arguments:
>
> >>> s = ft"{foo}"
>
> This would save the values marked for storage as a tuple of Template
> arguments in the __templates__ member for later. It may also be desirable
> for the Template object to store the name foo and the position in the
> string the foo object was formatted.
>
>
The "t" prefix makes sense.
I would reduce it from ft'...' to t'...'. But it looks good. This is in the
"alternatives":
https://github.com/guettli/peps/blob/master/pep-9999.rst#alternative-ideas
I am happy with backticks and/or t'...'. Backticks look a bit "cleaner" to
my eyes, but I
am fine with the "t" prefix, too.
_______________________________________________
Python-ideas mailing list -- python-ideas@python.org
To unsubscribe send an email to python-ideas-le...@python.org
https://mail.python.org/mailman3/lists/python-ideas.python.org/
Message archived at
https://mail.python.org/archives/list/python-ideas@python.org/message/XYGGM6O5YMFLNOY4ADCTNFUJIUCQN5PV/
Code of Conduct: http://python.org/psf/codeofconduct/
