From the docs: https://docs.codewars.com/training/troubleshooting#your-solution-seems-to-work-or-is-close-to-working-but-still-fails-tests

Check if your solution passes two successive calls with different inputs. It's sometimes the case that the solution contains some global variables or static members and a stale state is carried over from one invocation to another.

This is not true and your oslution has a bug because it uses global variables.

all random tests return an incorrect result, although I have checked my code in another compiler and it returns the correct answer with these values
of the "number" parameter. (python)