If you're a VIM user and a Python coder, that could interest you.

Syntastic, a syntax checker for VIM now includes Flake8 as a checker for Python code.

Syntastic can be used to check for syntax errors in files opened in VIM. It has a pretty extensive list of supported languages.

For Python it had PyFlakes, and since the latest version, it has my small glue script "Flake8", that reunites in a single stream: pep8, PyFlakes and a McCabe checker.

For Flake8 the next step is to support Python 3 -- as soon as I find some time, or a volunteer ;)

Thanks to Sylvain Soliman (and Clayton Parker) !