Travis CI: Use flake8 to find Python syntax errors or undefined names
CLA: trivial In Travis CI, add a Python linting step that runs flake8 tests in Travis CI to find syntax errors and undefined names. (http://flake8.pycqa.org ) __E901,E999,F821,F822,F823__ are the "_showstopper_" flake8 issues that can halt the runtime with a SyntaxError, NameError, etc. Most other flake8 issues are merely "style violations" -- useful for readability but they do not effect runtime safety. * F821: undefined name `name` * F822: undefined name `name` in `__all__` * F823: local variable name referenced before assignment * E901: SyntaxError or IndentationError * E999: SyntaxError -- failed to compile a file into an Abstract Syntax Tree Reviewed-by:Paul Dale <paul.dale@oracle.com> Reviewed-by:
Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com> (Merged from https://github.com/openssl/openssl/pull/7410)
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