[j-kidd]

Double indentation looks rather ugly though. I like the "K&R" style much better (as shown in comment from bpicolo):

    def some_descriptive_function_name(
        one_parameter,
        another_parameter,
    ):
        some_functionality()

Anyway, either one is superior to 'indent to sibling', where the lines are now tightly coupled to each other.

[sago]

We each have different tastes, yes.

But, coding standards aren't about tastes, they are about coordinating large numbers of programmers to write code in consistent ways. PEP 8 gives the 'double indentation' as standard, rather than the 'K&R' style.

You're free to write however you want to, and if you're the tech director of a company, you can tell everyone else to follow your aesthetics. But you'll be doing a lot of work with code written according to PEP8. In my experience, learning and disciplining your team to use the standard is better than having a house-style. But YMMV, of course.

PEP8 isn't my 'ideal' aesthetic for Python either, but I'd need a far better reason than 'I think that looks ugly' for not using it.

I also agree 'indent to sibling' is poor, and not very universally tool-supported, even though it is part of the PEP8 style.