thing is you return float although the result always is an integer value

Why are we supposed to return ['None'] if there is no fitting string in the List. It makes absolute sense to just return an empty List if there is NO match in the List.
Also there could be the STring 'None' in the list with searchword 'no' and you wouldn't know, was there no result or is 'None' the only result...
There are so many Katas where you have to do some weird stuff when having an edge case instead of just doing the obvious and i don't mfing get it.
I know it shouldn't bother me, but it really makes me mad, probably that is the purpose........ fy

case 1: return "1!/0!";

For this purpose string formatting was introduced

yeah, double negative

I think int(l**.5) is explicit enough, floor confuses more then it helps imo

Zeile 2-7 zusammengefasst

list_s = [s:=s.replace(x, ',') for x in 'aeiou'][-1].split(',')

I don't get the return line.. why can't you just

return x if x != 0 else n

EDIT: I just tested it, you can do it like this actually, you either overthought it completely or just wanted to troll

How did this get so many Best Practice Votes?
First building a dictionary, then checking each key how many odd letters exist..
I don't get the voting here

it is certainly not best practice to put values to a list and then sum them up, when you could just add each value on the same variable.
Further i don't understand at all, why he used strings as dictionary keys, converting them later to int instead of using the required type in the dictionary in the first place.

Is there anything gained by the first part of the if-expression

v in array[:i]