def register_unpack_format(name, extensions, function, extra_args=None,
                           description=''):
    if extra_args is None:
        extra_args = []
    _check_unpack_options(extensions, function, extra_args)
    _UNPACK_FORMATS[name] = extensions, function, extra_args, description
Remove all versions, set them to `v`
dataset/ETHPy150Open GeekTrainer/Flask/Work/Trivia - Module 5/env/Lib/site-packages/pip/_vendor/distlib/_backport/shutil.py/register_unpack_format--crossover with--dataset/ETHPy150Open edgewall/trac/contrib/sourceforge2trac.py/TracDatabase.setVersionList