2 ms·

There are very few new features in 3.8. It is a much less important release (for features) than 3.7, which for example added dataclasses and lots of typing and

There are very few new features in 3.8. It is a much less important release (for features) than 3.7, which for example added dataclasses and lots of typing and asyncio stuff. The most significant change in 3.8 is a notoriously controversial new infix operator. Even it's supporters would say that it's a niche usecase.

masklinn 5y ago
> There are very few new features in 3.8. > It is a much less important release (for features) than 3.7, which for example added dataclasses and lots of typing and asyncio stuff. That's funny because my take is the exact opposite: dataclasses are not very useful (attrs exists and does more), deferred type annotations are meh, contextvars, breakpoint(), and module-level getattr/settattr but not exactly anything you can't do without. Assignment expressions provide for great cleanups in some contexts (and avoiding redundant evaluations in e.g. comprehensions), expr= is tremendous for printf-debugging, posonly args is really useful, \N in regex can much improve their readability when relevant. $dayjob has migrated to python 3.7 and there's really nothing I'm excited to use (possibly aside from doing weird things with breakpoint), whereas 3.8 would be a genuine improvement to my day-to-day enjoyment.
- nerdponx 5y ago
  Deferred type annotations with `from __future__ import annotations` are a game-changer IMO. You can use them 3.7, which is good enough for me. The big improvement in 3.9 is not having to use `typing.*` for a lot of basic data types. The biggest improvements between 3.7, 3.8, 3.9, and 3.10 are in `asyncio`, which was pretty rough in 3.7 and very usable in 3.9. I use the 3rd-party `anyio` library in a lot of cases anyway (https://anyio.readthedocs.io/ https://anyio.readthedocs.io/), but it's not always feasible.

2 ms·

There are very few new features in 3.8. It is a much less important release (for features) than 3.7, which for example added dataclasses and lots of typing and

by calpaterson 5y ago

masklinn 5y ago
> There are very few new features in 3.8. > It is a much less important release (for features) than 3.7, which for example added dataclasses and lots of typing and asyncio stuff. That's funny because my take is the exact opposite: dataclasses are not very useful (attrs exists and does more), deferred type annotations are meh, contextvars, breakpoint(), and module-level getattr/settattr but not exactly anything you can't do without. Assignment expressions provide for great cleanups in some contexts (and avoiding redundant evaluations in e.g. comprehensions), expr= is tremendous for printf-debugging, posonly args is really useful, \N in regex can much improve their readability when relevant. $dayjob has migrated to python 3.7 and there's really nothing I'm excited to use (possibly aside from doing weird things with breakpoint), whereas 3.8 would be a genuine improvement to my day-to-day enjoyment.
- nerdponx 5y ago
  Deferred type annotations with `from __future__ import annotations` are a game-changer IMO. You can use them 3.7, which is good enough for me. The big improvement in 3.9 is not having to use `typing.*` for a lot of basic data types. The biggest improvements between 3.7, 3.8, 3.9, and 3.10 are in `asyncio`, which was pretty rough in 3.7 and very usable in 3.9. I use the 3rd-party `anyio` library in a lot of cases anyway (https://anyio.readthedocs.io/ https://anyio.readthedocs.io/), but it's not always feasible.