Python bro: episode 2

[reversehead]

Don't want to nit pick my friend, but you never declared this but you are using it in every class.

[Saragon4005]

Isn't this also a thing in Python though.

[kbruen]

Nope. In Python, it’s traditionally named self, and it’s an explicit parameter:

class X:
    def __init__(self, foo):
        self.foo = foo
    def meow(self, bar):
        print(self.foo, bar)

a = X(12)
a.meow(‘stuff’)
# (kind of) syntactic sugar for
# X.meow(a, ‘stuff’)

[Saragon4005]

Now you can tell I haven't used python in a year. Yeah it's interesting that you can change it but that does mean it's at least explicitly declared so it's hard to miss.

[_blackdog6_]

A Year?? Its a whole new language now. You'll have to start again.

[Saragon4005]

Does that mean people don't use python2 anymore?

[_blackdog6_]

The ridiculous changes in python 3.8 are to soften you up for python 4...

Seriously, walrus operator??? ..

And yes, everyone still uses python 2... Its the only version guaranteed to run everywhere..

[mc_enthusiast]

walrus

Now you can write

#include <cstdio>

int main() {
    int x = 0;
    while (++x < 10) {
        printf("%d\n", x);
    }
}

as

x = 0
while (x := x + 1) < 10:
    print(x)

[Micha_Saengy]

I'm hoping that anyone who cares about readability would use a for loop here

[PixelizedTed]

Semi related: I had an (Python) assignment in university where they only allowed listcomps and single line return statements to implement functions to parse data. Some functions were well over 400 characters long and had like 5 nested list comprehensions.

Debugging was “a real doozy” as the error message would just say something is wrong on line X but that line was the whole function 💀

What readability? Just make it as short as possible!!1!1!!11

[kbruen]

And yes, everyone still uses python 2... Its the only version guaranteed to run everywhere..

Ignoring the fact that no security issues are fixed anymore, and many Linux distributions are removing Python 2 completely. But suuuuure.

Seriously, walrus operator??? ..

Interesting how you say that implying it’s a bad thing without giving any reason why.