What's Coming in Python 3.8

Post by themeiguoren » Thu, Jul 18, 2019, 10:01 PM UTC

unethical_ban wrote: post #521

voldacar wrote: post #8

Python looks more and more foreign with each release. I'm not sure what happened after 3.3 but it seems like the whole philosophy of "pythonic", emphasizing simplicity, readability and "only one straightforward way to do it" is rapidly disappearing.

You can write very Python2.7 looking code with Python3. I don't think many syntax changes/deprecations have occurred (I know some have).

Post by craigds » Thu, Jul 18, 2019, 11:27 PM UTC

kbd wrote: post #118

Despite controversy, walrus operator is going to be like f-strings. Before: "Why do we need another way to..." After: "Hey this is great". People are wtf-ing a bit about the positional-only parameters, but I view that as just a consistency change. It's a way to write in pure Python something that was previously only possible to say using the C api.

Post by flavio81 » Fri, Jul 19, 2019, 12:47 AM UTC

amedvednikov wrote: post #93

voldacar wrote: post #8

Python looks more and more foreign with each release. I'm not sure what happened after 3.3 but it seems like the whole philosophy of "pythonic", emphasizing simplicity, readability and "only one straightforward way to do it" is rapidly disappearing.

I'm working on a language with a focus on simplicity and "only one way to do it": https://vlang.io The development has been going quite well: https://github.com/vlang/v/blob/master/CHANGELOG.md

Post by RhodesianHunter » Fri, Jul 19, 2019, 3:22 AM UTC

mehrdadn wrote: post #319

RhodesianHunter wrote: post #293

Earlier quoted context omitted.

> In a language with less features, you might have to write slightly more code, but the code you write will be more readable to everyone else. I disagree with this, which is precisely why I prefer feature rich languages like Java or better yet Kotlin. It doesn't get much more readable than something like: users.asSequence() .filter { it.lastName.startsWith("S") } .sortedBy { it.lastName } .take(3) Now try writing tha…

A little off-topic but how does that work? Is 'it' a magic variable referring to the first argument? Never seen magic variables that blend into lambdas like that before... would've expected $1 or something like that.

  users.asSequence()
    .filter { user -> 
      user.lastName.startsWith("S") 
    }
    .sortedBy { user -> 
      user.lastName 
    }
    .take(3)

Post by wodenokoto » Fri, Jul 19, 2019, 5:35 AM UTC

hjk05 wrote: post #463

heavenlyblue wrote: post #459

Earlier quoted context omitted.

Nothing stops one from evaluating f-strings lazily. They could simply return a format string with parameters captured instead of interpolated string.

They could... but then they wouldn’t return the interpolated string, and they’d be just like using format, just saving the characters “.format” which ruins the exact thing people like about them.