It's actually one of the most powerful enhancements one can make to a programming language

Posted Jan 28, 2025 22:32 UTC (Tue) by LtWorf (subscriber, #124958)
In reply to: It's actually one of the most powerful enhancements one can make to a programming language by NYKevin
Parent article: A revamped Python string-formatting proposal

I don't think your example is great either. If you make a function that reject strings, then a "SELECT name FROM names;" will fail because it's a string. Remember that fstrings do not exist at runtime so you have no way of knowing if it's an fstring or just a regular string with no parameters.

It's actually one of the most powerful enhancements one can make to a programming language

Posted Jan 29, 2025 0:28 UTC (Wed) by NYKevin (subscriber, #129325) [Link] (1 responses)

> I don't think your example is great either. If you make a function that reject strings, then a "SELECT name FROM names;" will fail because it's a string.

Yes, that is the intention.

> Remember that fstrings do not exist at runtime so you have no way of knowing if it's an fstring or just a regular string with no parameters.

And that is why it is the intention - because there is no other way to reject f-strings.

It's actually one of the most powerful enhancements one can make to a programming language

Posted Jan 29, 2025 0:28 UTC (Wed) by NYKevin (subscriber, #129325) [Link]

(In case anyone didn't read the PEP: You can just prefix a literal string with no interpolations with t, and it still gives you a template and not a literal string.)