human
Solve the following python programming problem given the following code:
def _test_extra_dirty_state(self) : 
    (users, User) = (a1.tables.users, self.classes.User) 
    m = mapper (User, users) 
    s = Session () 
    @ event.listens_for (m, 'after_update') 
    def e(mapper, conn, target) : 
        sess = object_session (target) 
        for entry in list (sess.identity_map.values ()) : 
            entry.name = '5' 
(a1, a2) = (User (name = '1'), User (name = '2')) 
    s.add_all ([a1, a2]) 
    s.commit () 
    a1.name = '3' 
    return (s, a1, a2) 

    
    

    Fix the buggy line: (users, User) = (a1.tables.users, self.classes.User)
assistant
#Here is Python code to fix the buggy line: (users, User) = (a1.

(users, User) = (self.tables.users, self.classes.User)