vim-flake8 is not working

Question

I installed vim-flake8 by git cloning it on my Pathogen bundle folder as usual, but when I tried to run the plugin pressing F7 or using :call Flake8() in one Python file I receive the following message:

Error detected while processing function Flake8:

line 8:

File flake8 not found. Please install it first.

Anyone has some clue about what is going on ?

Answer 1

The error message is telling you that you didn't install the program flake8. Install it.

Assuming pip is installed

pip install flake8

should work.

Answer 2

If installing flake8 via pip is not working try this:

apt-get install flake8

Worked for me.

Answer 3

If you installed flake8 already and that error occurred still, then call flake8 using absolute path.

To do this, edit line 73 of ~/.vim/autoload/flake8.vim as following:

call s:DeclareOption('flake8_cmd', '', '"/absolute/path/to/flake8"')

Answer 4

pip install flake8

and if you run into permission errors:

sudo -H pip install flake8