human
Complete this python program:
def group():
assistant
#Here is the Python program you requested.

    """RESTful CRUD controller
    - needed when group add form embedded in default/person
    - only create method is allowed, when opened in an inline form.
    """
    if (auth.permission.format != 'popup'):
        return ''
    def prep(r):
        if (r.method != 'create'):
            return False
        return True
    s3.prep = prep
    return s3_rest_controller('pr', 'group')