'What does the `-svv` flag mean when running pytest via the command line interface?

Can anyone explain what the -svv flag means/does when running pytest from command line? Such as:

pytest -svv

This is really driving me crazy, as I can't find it in pytest's official documentation, its code base or through a web search.



Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source