Steven D'Aprano added the comment:
Hello valeriymartsyshyn,
This is for reporting bugs in the Python interpreter, it is not a help desk for
learning how to program in Python. There are many places you can ask for help
to debug your code, such as Reddit's r/learnpython, or Stackoverflow, or t
New submission from Валерій Марцишин :
I have written a program which must show prime numbers. At the beginning it
does, but from some moment it doesn't work properly, despite the fact that it
is a loop. I suspect there is a bug somewhere, if not, I'll be thankful if you
tell me the issue.