How do you import modules with hyphens?

Question

I'm trying to import a module with a hyphen, but when I try to import it like this:
Import foo-bar
Python thinks that the hyphen is a minus symbol. I have also tried:
foo_bar =
__import__('foo-bar')
But then it says:
Module 'foo-bar' not found.
I have heard that you should rename the module but I don't know how.

Answer 1

you can only use Python modules not Java's(called classes in Java)

Answer 2

Mind To Machine
The module I tride to import was a Python module it simulated Java's random. I changed it to foo-bar to avoid confusion.