According to unittest docs: https://docs.python.org/3.7/library/unittest.html#module-unittest

`setUpClass is called with the class as the only argument and must be decorated as a classmethod()`

and:

`tearDownClass is called with the class as the only argument and must be decorated as a classmethod()`

However, I was able to create a passing test case where `setUpClass` and `tearDownClass` are decorated with `@staticmethod` instead of `@classmethod`:

I tested this with Python versions 3.6.4 and 3.7.1.

Please update the documentation to indicate that `@staticmethod` is allowed here, or else indicate why it's bad.