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Instead of running all the tests manually, the unittest module has a 'discovery' mode to run tests by importing them from a directory: this requires the tests to have different filenames, since they need to be imported as modules now (hence an empty __init__.py is added), and the current naming does not match the convention. Using unittest as loader/runner brings another change: tests

Hi, this series cleans up the Python sources, either static or generated, including also tests, to make them PEP 8 compliant; see https://www.python.org/dev/peps/pep-0008/ and tools like pep8. Almost all the issues reported by pep8 are fixed, reducing the issues from 3818 to 7. The changes should have no effect on the actual code, while it will help Python users with consistency with other