python zmq REQ和REP的请求-应答模式的代码

Sure, here is an example of Python code for the REQ-REP pattern using ZeroMQ (zmq) library:

REQ (client) side:

import zmq

context = zmq.Context()
socket = context.socket(zmq.REQ)
socket.connect("tcp://localhost:5555")

socket.send(b"Hello")
message = socket.recv()
print("Received reply:", message)

REP (server) side:

import zmq

context = zmq.Context()
socket = context.socket(zmq.REP)
socket.bind("tcp://*:5555")

while True:
    message = socket.recv()
    print("Received request:", message)
    socket.send(b"World")

In this example, the client sends a "Hello" message to the server using REQ socket, and waits for a reply. The server receives the message using the REP socket, prints it out, and sends a "World" message back to the client. The client then prints out the server's reply.

Hope this helps!