def ListingBox(listing, *args, **kwargs):
    " Delegate the boxing to the target's Box class. "
    obj = listing.publishable
    return obj.box_class(obj, *args, **kwargs)
def ListingBox ( listing , * args , ** kwargs ) : obj = listing . publishable return obj . box_class ( obj , * args , ** kwargs )
Delegate the boxing to the target's Box class.