Run python unit tests from a different python script

import_and_run.py

import unittest
import test_example

unittest.main(module=test_example)

test_example.py

import unittest

class myTest(unittest.TestCase):
    def test_dummy(self):
        assert True

This fails if import_and_run.py has main function with arguments.
To solve that, need to override sys.argv. something like:

if  __name__ == '__main__':
    import sys
    sys.argv = [sys.argv[0]]
    unittest.main(module=test_example)

thanks for sharing the fix!

If changing sys.argv is not an option, one can use unittest.TextTestRunner as described in this StackOverflow answer. IMHO, that's a more convenient way.