用python编写UDP通信服务器与客户端

UDP通信服务器与客户端的Python代码示例：

服务器端代码：

import socket

# 创建UDP套接字
server_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

# 绑定本地IP和端口
server_address = ('localhost', 8888)
server_socket.bind(server_address)

# 接收数据并回复
while True:
    data, client_address = server_socket.recvfrom(1024)
    print(f"Received data: {data.decode('utf-8')} from {client_address}")
    response = "Hello, client!"
    server_socket.sendto(response.encode('utf-8'), client_address)

客户端代码：

import socket

# 创建UDP套接字
client_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

# 发送数据
server_address = ('localhost', 8888)
message = "Hello, server!"
client_socket.sendto(message.encode('utf-8'), server_address)

# 接收回复
data, server_address = client_socket.recvfrom(1024)
print(f"Received data: {data.decode('utf-8')} from {server_address}")

在运行服务器端代码之前，需要先运行客户端代码，因为客户端会先向服务器发送数据，服务器才会回复。