#!/usr/bin/python 
import os,sys 
def check_ip(ipaddr): 
import sys 
addr=ipaddr.strip().split('.') #切割IP地址為一個列表 
#print addr 
if len(addr) != 4: #切割後列表必須有4個引數 
print "check ip address failed!"
sys.exit() 
for i in range(4): 
try: 
addr[i]=int(addr[i]) #
 
每個引數必須為數字，否則校驗失敗 
except: 
print "check ip address failed!"
sys.exit() 
if addr[i]<=255 and addr[i]>=0: #每個引數值必須在0-255之間 
pass
else: 
print "check ip address failed!"
sys.exit() 
i+=1
else: # www.jbxue.com
print "check ip address success!"
if len(sys.argv)!=2: #傳參加本身長度必須為2 
print "Example: %s 10.0.0.1 
 
"%sys.argv[0] 
sys.exit() 
else: 
check_ip(sys.argv[1]) #滿足條件呼叫校驗IP函式