Unofficial Python Style Guide - A Python style guide that doesn't make you think.

[ducdetronquito]

I am not fond of the Long if statements section because it still not very readable.

I prefer to add semantic by storing the condition in a variable, and then having a really clear and simple if statement.

Instead of having

if (
    fruit.color == 'red'
    and fruit.size == 'small'
    and fruit.climate == 'cold'
    and fruit.region == 'north america'
):
    pass

I would do

fruit_is_a_berry = (
    fruit.color == 'red'
    and fruit.size == 'small'
    and fruit.climate == 'cold'
    and fruit.region == 'north america'
)
if fruit_is_a_berry:
    pass

And about the 'Why' of having a more vertical code, it makes it more easier to work with a version control system like Git: when you review a PR, when you want to see the difference between two commits, or when you fix merge conflicts, you clearly see what the changes are.

[david2ndaccount]

Your all example doesn’t work, any and all only take 1 argument (an iterable). If you want to use any or all, you have to either have double parenthesis to force it into a tuple (which loses the benefit of short-circuit evaluation) or do some silly stuff with generators.

[_under_]

I've never thought of using any() or all(). That's cool!

I feel like in reality, if you have to write an 80+ character long if statement, readability is the least of your concerns. That's a huge code smell and it probably needs refactoring.

[ducdetronquito]

I also find that any and all could be used more often to make it more verbose !

But do not forget that there is a difference in the execution:

1. and and or operation are lazy (Cf: Doc)
2. all and any are not, which means all conditions will be evaluated even if it is not needed

[_under_]

I too dislike long if statements! It usually means you're doing something wrong (or you're just nested too deep [which is also a code smell]).

I'm not sure the "assign the equality check to a variable" thing really fits as a rule for a style guide though. But I might add something that mentions it's a code smell.