clever but pretty hard to read what's going on IMO

True, self.juices should be emptied if everything is poured out (amount >= self.amount).

Crash in get_concentration if self.amount is 0

Nice one! I have similar solution with datetime, timedelta and %, but your is better and shorter!

followed

I am going to unpublish the kata until concerns related to copyright, licensing, and intellectual property get explicitly clarified as irrelevant/inapplicable in this case.

Are you sure you can just copy CheckIO's content to CW? afaik this has never been allowed for every monetized competitive coding website.

Are you sure you can just copy CheckIO's content to CW? afaik this has never been allowed for every monetized competitive coding website.

I also detail the input argument in the description

Thanks for yopur feedback.
I added some random tests

I'd get rid of the named argument in your first test, as it forces solvers to keep the parameter name the same.

Which, by the way, why is it named els? This doesn't mean anything to me and isn't referenced in the description.

Needs random tests.

This is good. Clean version of the for loop and it's clear what's going on without using some escoteric math property.

Very nice indeed

good job, Matz!)

Quite clever.
On the other and my solution had 60 lines of code and a lower performance...