Because there's no need to reinvent the wheel.

I am also lost. What is a decimal representation?

While I agree it can be improved as you said, I consider something as a kata issue if the user can't fix it changing his/her code. In this case, the problem comes from the user returning a different datatype from the expected one, and it can be fixed by the user, returning the expected one.

I would still consider crashing tests a kata issue. If tests want to use the returned value in a non-trivial way, it should be sanitised and not cause a crash.

Given s and x the task is to return as an integer ...

Well, you're returning a list instead of a number, that's your code's problem, not a kata issue.

I get a TypeError no matter what I do, whether I am testing or attempting the solution.

The problem seems to be the "testing" function defined. I get:

Traceback (most recent call last):
  File "tests.py", line 18, in <module>
    testing(gps(s, x), u)
  File "tests.py", line 6, in testing
    r = fabs(actual - expected)
TypeError: unsupported operand type(s) for -: 'list' and 'int'

The list type just changes to 'None' if I just return nothing. Can anybody help?

Reviewed, Forked & Approved. (Honor points goes to you)

Beutiful.

yes and no

It is time to learn boolean :)

🔪

Today i learned: You can do this

im asking why people vote it as cleaver ?

I dont C/P. I am printed, dude...