Ultra-simple test harness for Python. Locates all functions in the current module that start with "test", and runs them.

nanotest.py

def test_example():
    assert False, "A failing test"

if __name__ == "__main__":
    tests = [(k, v) for k, v in locals().items() if k.startswith("test")]
    print("%s TESTS FOUND" % len(tests))
    for k, v in tests:
        print(k)
        v()
    print("TESTS COMPLETE")