A function to invoke psf-black in vim without any plugins or their frankenstalled virtual environment mini-pseudo-python-distro-hidden-directory-thing

black.vim

fun Blackify()
    let l:bsave = winsaveview()
    let l:tname = tempname()
    exe 'keepjumps %!black --line-length 119 -q - 2>' . l:tname
    if v:shell_error > 0
        let l:lines = readfile(l:tname)
        for l:line in l:lines
            echo l:line
        endfor
        call delete(l:tname)
    endif
    call winrestview(l:bsave)
endfun