flake8 violations

Generated on 2019-09-16 13:18 with flake8-colors: 0.1.0, flake8-docstrings: 1.4.0, pydocstyle: 4.0.1, import-order: 0.18.1, mccabe: 0.6.1, naming: 0.8.2, pycodestyle: 2.5.0, pyflakes: 2.1.1