Example using concurrencytest module: https://github.com/cgoldberg/concurrencytest

concurrencytest_example_1.py

#!/usr/bin/env python
#
# Example using `concurrencytest`:
#   https://github.com/cgoldberg/concurrencytest

import time
import unittest

from concurrencytest import ConcurrentTestSuite, fork_for_tests


class SampleTestCase(unittest.TestCase):
    def test_it(self):
        time.sleep(0.5)


if __name__ == '__main__':

    # load a TestSuite with 50x TestCases for demo
    loader = unittest.TestLoader()
    suite = unittest.TestSuite()
    for _ in range(50):
        suite.addTests(loader.loadTestsFromTestCase(SampleTestCase))
    print('Loaded %d test cases...' % suite.countTestCases())

    runner = unittest.TextTestRunner()

    print('\nRun tests sequentially:')
    runner.run(suite)

    print('\nRun same tests across 50 processes:')
    concurrent_suite = ConcurrentTestSuite(suite, fork_for_tests(50))
    runner.run(concurrent_suite)