Create a computer system which mimics the functionality of lottery?

I’m a beginner in programming and started in python language. I need some help to create a computer system which mimics the functionality of lottery. Each lottery draw requires six balls, numbered between 1 and 49 to be drawn, plus one “bonus ball” making a total of seven.
The balls are not replaced after each selection, so each number may only be selected once.

The following requirements specification was created for the application: - Seven random numbers should be selected – six regular numbers plus the bonus ball. - The numbers must be displayed to the user. - No randomly selected number should be repeated.