f-string with gettext

[JiawenLai]

What to do with f-strings?

[tomasr8]

Hi! Could you give more details on what it is you're trying to do?

[JiawenLai]

Thanks for your reply! First，I can't extract the msgid in f-string format without any warnings. And since f-string replaces the variable when passing in the parameter, even if msgid is extracted, it cannot be used. Is it possible that babel itself does not support f-string?

[JiawenLai]

like this _(f"test {s1} {s2}")

[tomasr8]

Can you share your code? In general, you can only extract literal strings. f-strings don't work because the exact string depends on variables which are not known when it is extracted. If you have parametrized strings, you should do this instead:

_('Hello, {name}!').format(name=name)

(notice that format() is called on the result of the gettext call)

[JiawenLai]

OK，thank you. Maybe I can only convert all the f-strings in my code to str. format to use Babel.

s1 = "hello"
s2 = "python"
var6 = _(f"test {s1} {s2}")
===
_("test {} {}").format(s1, s2)

[tomasr8]

Yes, that should be sufficient :)