Yes, I was thinking that too. Hell, you can write:

    do_x if a.y? 

Unfortunately (or fortunately, depending on perspectiven- great power and all that), Ruby allows things that Python doesn't and it's not hard to find yourself in a write-once mud bath.

I do like Python's modules over how Ruby handles them too. Ruby's import (require) is akin to C/C++, with modules as a separate idea. I prefer the style of importing exactly what you need.

But I know Ruby better so it's my go-to.

Or Perl 5. `do_stuff() if $a->y();` is a common idiom.

Or Perl 6. `do-stuff() if $a.y;` is the Perl6 version. You can even declare your variables to be sigil-less so you end up with `do-stuff() if a.y;` if you want. See my Perl6 Advent Calendar article for a quick tour of the language, available docs, with practical examples focusing on using Perl6's novel features to write a self documenting command line script.

https://perl6advent.wordpress.com/2018/12/16/

I've written code in everything from assembly to ML, Java, and Prolog. Perl6 is the only language I've used that I would "mind-expanding". The more I use it, the I realize how radical its design is.