There is another plugin pytest-repeat, but it doesn't work with unittest.

Run tests in a random order

pip install pytest-random-order
Important: the presence of pytest-random-order will automatically randomize tests, no configuration change or
command line options is required.
As explained earlier this allows detection of coupled tests - where one test's state affects the state of another. When
pytest-random-order is installed it will print the random seed it used for that session, e.g: