How to run the Python code formatter Black in Vim

Run Black

:!black %
:e!

Create a keybind to run Black and save file by adding this to your `.vimrc`

autocmd FileType python nnoremap <buffer> <leader>b :w<cr>:!black %<cr>:e!<cr>

By default, the <leader> key is the backslash \ character. Mine is the spacebar key. You can remap it by adding the following line in your .vimrc:

let mapleader=" "

If it fails to reformat the code, put Vim in the background by pressing Ctrl + z so that you can read the error message, and then just come back to Vim with the fg command.

Run Black

Create a keybind to run Black and save file by adding this to your .vimrc

Create a keybind to run Black and save file by adding this to your `.vimrc`