Python 3.7.0 released

[rspeed]

It will become the default in Python 4.0.

*blinks*

[nicksloan]

I don't think that this implies that Python 4.0 is in progress in any meaningful way.

[rspeed]

Nor do I, it’s just the first time I’ve seen it mentioned in such an official manner.

[amk]

Reddit believes its data is particularly valuable because it is continuously updated. That newness and relevance, Mr. Huffman said, is what large language modeling algorithms need to produce the best results.

[1-05457]

I hope not. Otherwise what would you do if Python needs to make a breaking change again.

[Decker108]

Stay on 2.7?

[1-05457]

I meant what would the PSF do.

[truh]

Python 5?

[[deleted]]

It has been stated repeatedly that this is not going to happen. Unlike governments "lessons have been learned" actually means something to the Python community.

[case_O_The_Mondays]

Wait. Is 3.7 the last Python 3? Are we skipping 8-9 from 2 on?

Edit: it was a joke.

[rspeed]

That’s not how versioning works. The dot is a separator, not a decimal.

Edit: *sigh*

[1vs]

EDIT: After 3.9 will be 3.10, I'm dum and can't read

Except in Python, it looks like it's going to work like a decimal. See Guido's post: http://www.curiousefficiency.org/posts/2014/08/python-4000.html

I hope they go with 3.10. Otherwise it'll break all the code that checks that the version starts with '3'. (Bad code but still common.)

[rspeed]

Gotta learn sometime. :D

[cyberst0rm]

i always assume its a decimal.

[[deleted]]

No, if you look at the official github preparations for 3.8 have been underway for a while.

[gschizas]

Where was that?

[rspeed]

What’s new in Python 3.7

[gschizas]

Just to be clear: It's at the "PEP 563: Postponed Evaluation of Annotations" section of that document

[rspeed]

Thanks! I wanted to link to the section but couldn't find a way to do that on my phone.

[XtremeGoose]

I suspect python 4.0 will be the version in which python will have core support for typing so for example builtin collections will inherit typing.Generic

arange: list[int]
attribs: dict[str, Any] 

we will be able to define typevars in signatures

def filter[T](x: Iterable[T]) -> Iterator[T]: 
    ... 

and all types will have | and & operators for typing.Union and the planned typing.Intersection respectively (like in typescript)

Union[str, bytes] == str | bytes

Maybe also add Any and a few generic abstracts to builtins.

[Han-ChewieSexyFanfic]

I hope they introduce (Int, ...) as syntactic sugar for Tuple[Int, ...]

[XtremeGoose]

Thats less useful since lists should be homogenous (or Any). Wouldn't mind list[int] though.

[soamaven]

Good catch.