python socket之进程间通信

最近用到python的socket实现进程间通信，发现网上的资料很零散，例子极少。写了一个example：
Server：
if __name__ == '__main__':
import socket
sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
import os
if os.path.exists('/tmp/UNIX.d'):
os.unlink('/tmp/UNIX.d')
sock.bind('/tmp/UNIX.d')
sock.listen(5)
while True:
connection,address = sock.accept()
print "Data : %s"%connection.recv(1024);
connection.send("hello")
connection.close()
Client：
if __name__ == '__main__':
import socket
sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
sock.connect("/tmp/UNIX.d")
import time
time.sleep(2)
sock.send('hello')
print sock.recv(1024)
sock.close()