For anyone reading this now, its generally better to use fstrings

It is creating a formated string. Here is a good video on the process:

https://www.youtube.com/watch?v=nghuHvKLhJA

is it only slower because of short circuit evaluation if the first argument is wrong or in other cases as well?

no, it's actually slower than the top one

this is helpful thank you

I think just the beginners cannot read and understand a one-liner in similar size. :)

no problem! I couldn't see this earlier, because you marked it as a spoiler. (I got done with work and found a spare moment to solve the kata) Best of luck, let me know if you have any other questions.

this is probably because you have not entered any code after at least one of the function declarations:

    def item_count(self):
      ^
IndentationError: expected an indented block

Use spoiler flag next time, please.

The function name was originally quarterOf, which is not in line with the python conventions. So I "prepared" for the future and put there the snake case version of the function name too.

lol. This is like hard solution for easy question.