Flake8

Installing

Install the flake8 command line utility to run Python code through flake8 and find where it does not meet the standards:

pip install flake8

Relaxing Line Length Standard

To relax the max line length default, set it with the flake8 config file.

Put the following into your ~/.config/flake8 file:

[flake8]
max-line-length = 120

Vim Plugin

https://github.com/nvie/vim-flake8