python-扫描某一网段下的ip

 #!/usr/bin/env python

 #-*- coding:utf-8 -*-

 ############################

 #File Name: ipscaner.py

 #Author: frank

 #Mail: frank0903@aliyun.com

 #Created Time:2017-06-05 16:06:37

 ############################

 import platform

 import sys

 import os

 import time

 import thread

 def get_os():

     '''

     get os 类型

     '''

     os = platform.system()

     if os == "Windows":

         return "n"

     else:

         return "c"

 def ping_ip(ip_str):

     cmd = ["ping", "-{op}".format(op=get_os()),

            "", ip_str]

     output = os.popen(" ".join(cmd)).readlines()

     flag = False

     for line in list(output):

         if not line:

             continue

         if str(line).upper().find("TTL") >=0:

             flag = True

             break

     if flag:

         print "ip: %s is ok ***"%ip_str

 def find_ip(ip_prefix):

     for i in range(1,255):

         ip = '%s.%s'%(ip_prefix,i)

         thread.start_new_thread(ping_ip, (ip,))

         time.sleep(0.3)

 if __name__ == "__main__":

     print "start time %s"%time.ctime()

     commandargs = "192.168.1.1"

     args = "".join(commandargs)    

     ip_prefix = '.'.join(args.split('.')[:-1])

     find_ip(ip_prefix)

     print "end time %s"%time.ctime()