Vim keybinding for toggling PEP8 linting

pep8-toggle.vim

" Linter (provided through ALE)
let g:ale_lint_on_text_changed = 'never'
let g:ale_lint_on_save = 1
let g:ale_linters = {
\   'python': ['flake8'],
\}
" By default, don't worry about PEP8
let g:ale_python_flake8_options = "--ignore=E2,E3,E4,E5,E7,W"
let g:python_highlight_space_errors = 0
 
" Function to enable PEP8 checking
function! TogglePep8()
  if g:ale_python_flake8_options == ""
    let g:ale_python_flake8_options = "--ignore=E2,E3,E4,E5,E7,W"
    setlocal colorcolumn=0
    let g:python_highlight_space_errors = 0
  else
    let g:ale_python_flake8_options = ""
    setlocal colorcolumn=80
    let g:python_highlight_space_errors = 1
  endif
endfunction

" Python PEP8 checking
nmap <leader>8 :call TogglePep8()<CR>