human
Solve the following python programming problem given the following code:
def has_delete_permission(self, request, obj_or_class) : 
    def has_perm(o) : 
        codename = get_permission_codename ('delete', o._meta) 
        return request.user.has_perm (('%s.%s' % (o._meta.app_label, codename))) 
if isinstance (obj_or_class, type) : 
        return has_perm (obj_or_class) 
else : 
        return all ((has_perm (self) for o in obj_or_class.depth_first_order ())) 

    
    

    Fix the buggy line: return all ((has_perm (self) for o in obj_or_class.depth_first_order ()))
assistant
#Here is Python program to fix the buggy line: return all ((has_perm (self) for o in obj_or_class.

return all ((has_perm (o) for o in obj_or_class.depth_first_order ()))