I propose to complicate the kata with double encryption after the first encryption +1 calculate the number of letters encrypt the message +n

first option
n = len([хь, о, м, у, х, в, у]) % 49
input хьо мух ву >> х1оь нуьхь гуь >> ъу тчщ ич

if the letter length is even, first +n then +1 encryption

second option
n = len([хь, о, м, у, х, в, у, 1]) % 49
input хьо мух ву >> ъу тчщ ич е >> 1ч цюяь ню къ

I tested your kata random tests are in it. I don't understand why the above pointed out the problem with random tests maybe the sample is small.

sample test doesn't work

I can fix kata problems, but that would be my branch.
The top of the page lists what you need to do.
add random tests your tests are fixed and therefore can be easily bypassed.
add a reference solution for your kata.
improve the description to make it as easy as possible to understand the essence of the kata by adding examples

I can solve all of the above problems

knowing russian doesn't help here at all

when will this kata be published?
I'm thinking of translation to dart

No, there should be a name nohcho_message

I don't know about industrial programming, but here it is often done like this

thanks for your reply, I will leave the name as is, changing the writing style does not affect performance

What do you mean it can't fit inside codewars.com?
What does it mean that code is created for leetcode?

Hi can you tell me why it is better to use the name of the built-in function than to change the writing style?

the random tests were just numbers.
now strings, numbers, booleans
fork python

I apologize for my oversight.