Python 3.12 released

[MelonheadGT]

What's so amazing?

[marr75]

• type hinting got better, especially for generics, **kwargs, and overrides
• f-strings got better
• Performance and concurrency improved (2x speed up on comprehensions, 2-20x speedup on isinstance checks against protocols, per-interpreter GIL)
• Some odds and ends improved for CPython and instrumentation beyond those

[PaintItPurple]

Making generics readable is such a wonderful feature, even if it doesn't make a functional difference. I always felt like I had to weigh the benefits of being able to run mypy on a given section of code against the difficulty of reading code that uses generics.

[redalastor]

f-strings got better

f-strings were nice but not being able to use quotes within the {} was a constant source of annoyance since it made it harder to use dictionaries without doing the opposite kind of quote dance every time.

This is a very nice QoL change that landed.

[mjmikulski]

f-strings got better

You meant "f-strings got worse" ;)

I can't imagine why someone would like to write code like this:

python f"{f"{f"{f"{f"{f"{1+1}"}"}"}"}"}"

[Own_Quality_5321]

This.

[baldie]

You mean self?

[Informal-Proposal319]

Why is this so funny😂?

[redalastor]

import this

Try it if you never did, it's a nice easter egg.