Comment 2 for bug 1685910

OK, thanks for the quick clear cut reply. This surprised me - could the general principle be mentioned on the README?

https://github.com/PyCQA/pyflakes/blob/master/README.rst

If there is a table of all the pyflakes error codes in your documentation I could not find it, but it would be great to say there which are Python 2 or 3 specific.