ERROR: test (tests.unit.test_flake8.TestFlake8)
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Traceback (most recent call last):
  File "/home/pc1/dev/bettor_frontend/tests/unit/test_flake8.py", line 36, in test
    style_guide.check_files([base_path])
  File "/home/pc1/dev/bettor_frontend/env/local/lib/python2.7/site-packages/pep8.py", line 1670, in check_files
    self.input_dir(path)
  File "/home/pc1/dev/bettor_frontend/env/local/lib/python2.7/site-packages/pep8.py", line 1706, in input_dir
    runner(os.path.join(root, filename))
  File "/home/pc1/dev/bettor_frontend/tests/unit/test_flake8.py", line 31, in runner
    results = style_guide.input_file(*args, **kwargs).strip()
AttributeError: 'int' object has no attribute 'strip'