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620 points tambourine_man | 11 comments | | HN request time: 1.345s | source | bottom
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enescakir ◴[] No.43749266[source]
Not sure about introducing yet another string prefix. Between f-strings, raw strings, and i18n stuff, it’s already getting crowded. Curious how readable this will be in large codebases.
replies(3): >>43749334 #>>43749489 #>>43749515 #
1. wodenokoto ◴[] No.43749334[source]
I'm of the opposite opinion. Let's set the prefixes free!

    from sql import sql

    query = sql"SELECT user_id, user_name FROM {user_table_versioned} WHERE user_name = {user_name}"
replies(4): >>43749474 #>>43749545 #>>43749548 #>>43749927 #
2. dmurray ◴[] No.43749474[source]
How would this be different from a function sql() that operates on one of these new t-strings?

The syntactic sugar of changing it from sql(t"...") doesn't seem particularly valuable. The novel thing about t-strings is that they change the parsing at compile-time.

replies(3): >>43749506 #>>43749648 #>>43749903 #
3. stavros ◴[] No.43749506[source]
It wouldn't be different, but it would be more convenient because we no longer have to count the number of %s, you'd put the variable inline.
replies(1): >>43749558 #
4. mcintyre1994 ◴[] No.43749545[source]
This is how JavaScript does it with tagged template literals.

Your sql there would just be a function that receives the array of strings/values and returns whatever.

5. masklinn ◴[] No.43749548[source]
This was considered and rejected: https://peps.python.org/pep-0750/#arbitrary-string-literal-p...
6. masklinn ◴[] No.43749558{3}[source]
That's... already the case of t-strings?
replies(1): >>43749570 #
7. stavros ◴[] No.43749570{4}[source]
Yes, that's my point. The GP was already talking about a t-string.
replies(1): >>43749609 #
8. masklinn ◴[] No.43749609{5}[source]
dmurray was comparing a hypothetical sql"..." with sql(t"..."). There are no %s either way.
9. Timwi ◴[] No.43749648[source]
> The syntactic sugar of changing it from sql(t"...") doesn't seem particularly valuable.

It's valuable because:

- IDEs could then syntax-highlight SQL inside of SQL strings and HTML inside of HTML strings

- You can't accidentally pass an HTML string to your SQL library

10. wodenokoto ◴[] No.43749903[source]
It’s different from a function the same way f”” is different from f(“”) and t”” is different from t(“”)

There’s nothing stopping you from building a Python function that parses a string looking for {} and then searching globals for those variables. And you can extend that to also do some code execution and formatting.

To me the real sugar of f-strings is that the editor knows that it’s a template and not just a string. Expanding this to having SQL and regex syntax highlighting, linting and code formatting inside my Python code is a pretty cool prospect.

11. dsego ◴[] No.43749927[source]
This is what JS does with tagged template literals. https://github.com/dsego/sql_tag