在python中实现一个信息接受与发送功能，具体方法如下：

import socket 
import time
ANY = '0.0.0.0'
MCAST_ADDR = '224.168.2.9'
MCAST_PORT = 1600 
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP) 
sock.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1) #允许端口复用 
sock.bind((ANY,MCAST_PORT)) #绑定监听多播数据包的端口
sock.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, 255) 
status = sock.setsockopt(socket.IPPROTO_IP, 
socket.IP_ADD_MEMBERSHIP, 
socket.inet_aton(MCAST_ADDR) + socket.inet_aton(ANY));
sock.setblocking(0) 
ts = time.time() 
while 1: 
try: 
data, addr = sock.recvfrom(1024) 
except socket.error, e: 
pass 
else: 
print "We got data!"
print "FROM: ", addr 
print "DATA: ", data