Hi @georgitanev - it's very difficult to troubleshoot such OOP katas, but I had a quick look at your code and I think your mistake might be in the line:

- (amount/ len(list(self.juise_ingredients.keys())))

in your def pour_out (self, amount) method.

Right now you are dividing by the number of ingredients, if I am not mistaken, but that is not how the pour_out should behave - you should divide by the total amount.

Same for me. I've checked the concentration with calculator and the same values, and in calc is giving better result. I think some tests are incorrect in Python.

Those messages are just the ones telling you your output is incorrect (the tests don't check a strict equality, they control the answer matches the expected one with a relative margin). Without more information it's impossible to help. I advice you to read the documentation: https://docs.codewars.com/training/troubleshooting/

No idea about this error either. Trying in Python.

Sorry, I meants the 8th.

Sorry, akar-0, i'm alredy saw my fault. Thanks a lot for helping!)

Damn... Don't you see the 7th column is not right? Do you really need me to detail which number is duplicated, and which number is missing?

Can you told what exactly incorrect in 7th column, because I still don't know why this text should returns False?

Look at 7th column.

Hi, guys!

Can someone tell me, why this text
[1, 3, 2, 5, 7, 9, 4, 6, 8]
[4, 9, 8, 2, 6, 1, 3, 7, 5]
[7, 5, 6, 3, 8, 4, 2, 1, 9]
[6, 4, 3, 1, 5, 8, 7, 9, 2]
[5, 2, 1, 7, 9, 3, 8, 4, 6]
[9, 8, 7, 4, 2, 6, 5, 3, 1]
[2, 1, 4, 9, 3, 5, 6, 8, 7]
[3, 6, 5, 8, 1, 7, 9, 2, 4]
[8, 7, 9, 6, 4, 2, 1, 3, 5] should returns False instead of True?

in half tests I got a message that my answer should be closed to (smthnum) with absolute or relative margin 1e-9. How can I do it in Python?