it works, but don't use re unless there's another way, ok?

Very clever solution. Good job guyssss

It's perfect until you try it with n > 300.

You seem to be implying this is wrong, but actually, it's correct up to n==300.
Not only that, but for all inputs in that range it features O(1) complexity
This is literaly the PERFECT solution

Bravo. Best solution I have seen for this kata

By doing the COBOL version, I realized my original function didn't handle properly cases like this one: a="0.2", b="5", a="0.2", b="0.005", a="0.1", b="0.001". I would suggest to add them to fixed tests for all languages.

That's the way!!

I fixed this solution here: https://www.codewars.com/kata/reviews/52a78825cdfc2cfc87000008/groups/620b7948793105000108b662

True, nice catch! Basically this happens because this solution does not calculate well the (-3 - 2), it returns -1 instead of -5. It would be nice to add this test to the solution validation.

This solution returns incorrect result for expression:
(2 - 2.5) - (-3 - 2) * (-5)
Returns -5.5, but should be -25.5

[...array] creates a temp array. No temp arrays allowed in this exercize

Me lie un poco ... en fin.. a seguir aprendiendo.

Vaya 😳

real python way

Wow, that's some interesting fact you got there.