Python scans the intranet for surviving hosts

#author:  orangleliu  date: 2014-11-12#python2.7.x  ip_scaner.py ' different platforms, The implementation of IP scanning on the intranet side sometimes needs to know the valid IP of the local area network, but does not want to find a specific tool to scan. How to use  python ip_scaner.py 192.168.1.1  (will scan 192.168.1.1-255 IP) ' Import platformimport  sysimport osimport timeimport threaddef get_os ():     "     get os  type      '     os =  Platform.system ()     if os ==  "Windows":         return  "n"     else:         return  "C"     def ping_ip (IP_STR):     cmd = ["Ping ", "-{op} ". Format (Op=get_os ()),           " 1 ",  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_strdef find_ip (ip_prefix):    "       gives the current 127.0.0&nbsp, and then scans the entire segment for all addresses      '     for i in  range (1,256):        ip =  '%s.%s '% (ip_prefix,i)       &nBsp;  thread.start_new_thread (ping_ip,  (IP))          Time.sleep (0.3)     if __name__ ==  "__main__":     print   "start time %s"%time.ctime ()     commandargs = sys.argv[1:]     args =  "". Join (Commandargs)              ip_prefix =  '. Join (Args.split ('. ') [:-1])     find_ip (Ip_prefix)     print  "end time %s"% Time.ctime ()

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Python scans the intranet for surviving hosts