human
Solve the following python programming problem given the following code:
def Listen(addr = ('0.0.0.0', 0), proto = 'tcp', * args) : 
    "A Listener is a generic network listener for stream-oriented protocols.
    Multiple tasks  may invoke methods on a Listener simultaneously.

    Example::

            def handle_connection(conn):
                while True:
                    data = conn.read()
                    if not data:
                        break
                    conn.write(data)

            l = Listen(('127.0.0.1', 8000))

            try:
                while True:
                    try:
                        conn, err = l.accept()
                        t = tasklet(handle_connection)(conn)
                    except KeyboardInterrupt:
                        break
            finally:
                l.close()

            run()
    " 
    try : 
        listen_class = LISTEN_HANDLERS [proto] 
except KeyError : 
        raise ValueError ('type should be tcp, udp or unix') 
return listen_class (addr, * proto) 

    
    

    Fix the buggy line: return listen_class (addr, * proto)
assistant
#Here is Python code to fix the buggy line: return listen_class (addr, * proto)
.

return listen_class (addr, * args)