def bind(key, to, options='', mode=None, leader=None):
    if not leader:
        leader = setting('leader', '<localleader>')

    vim.command((options, leader, key, to) % 'nnoremap %s %s%s %s')
dataset/ETHPy150Open sjl/threesome.vim/autoload/threesomelib/util/keys.py/bind/swapped operands of `%`