# -*- coding: cp936 -*-
import socket

print "Creating socket connecting...",
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)


#把網路服務名（如http,ftp,email）和 協議名（如TCP,UDP,IPX/SPX等）
#轉換為該服務名對應的埠號。如果協議名給定了，則必須為TCP或UDP
#不然將會匹配其他的協議
port = socket.getservbyname("http", "tcp")

print "conection to remote host by port %d" %port 
result = s.connect_ex( ("www.baidu.com",port) )

#顯示連結到遠端主機的本地IP地址和埠號
print "Connected from ", s.getsockname()
#x顯示本地IP地址和埠號
print "Connected to ", s.getpeername()

#test
if result != 0 :
    print "waiting...."
else :
    print "Done .!"
        
 

顯示結果如下：

Creating socket connecting... conection to remote host by port 80
Connected from  ('192.168.1.102', 54318)
Connected to  ('220.181.112.143', 80)
Done .!