The parameter `g:syntastic_python_checker_args` can be used to pass additional
arguments to the Python syntax checker. Example configuration:
let g:syntastic_python_checker = "flake8"
let g:syntastic_python_checker_args = "--ignore=E501 --max-complexity=10"
Define a user-configurable variable g:syntastic_python_checker and
otherwise default to an available checker.
Make the highlighting catch all pyflakes errors
Add a header to the file
Make the errorformat handle columns provided by pep8 through flake8
