32位主机序或者网络序值转换为ip（小工具）

网络开发人员，有时候需要将32位数字转换为ip。为了提高工作效率，我用python（基于python2.x版本）开发了小工具，可能比较简单，就当抛砖引玉吧！

#!/usr/bin/env python import sysimport getoptimport socketimport structdef hostToIp(value):    if value.isdigit():        network_value = socket.htonl(long(value))        print '[network order value]:%s' %network_value        ip = socket.inet_ntoa(struct.pack("!I", network_value))        print '[ip]:%s'%ip      else:        print 'The host value must be number'  def networkToIp(value):    if value.isdigit():        host_value = socket.ntohl(long(value))        print '[host order value]:%s' %host_value        ip = socket.inet_ntoa(struct.pack("!I", int(value)))        print '[ip]:%s'%ip      else:        print 'The network value must be number' def usage():    print 'hntoa.py usage:'    print '-h,--help: show help message.'    print '-v, --version: show script version.'    print '-H,--host: input an host order value.'    print '-N, --network: input an network order value.'def version():    print 'hntoa.py 1.0'def outPut(args):    print 'Hello, %s'%argsdef main(argv):    try:        opts, args = getopt.getopt(argv[1:], 'H:N:hv', ['host=','version','help','network='])    except getopt.GetoptError, err:        print str(err)        usage()        sys.exit(2)    for o, a in opts:        if o in ('-h', '--help'):            usage()            sys.exit(1)        elif o in ('-v', '--version'):            version()            sys.exit(0)        elif o in ('-H', '--host'):            print '[host order value]:%s' %a            hostToIp(a)        elif o in ('-N', '--network'):            print '[network order value]:%s' %a            networkToIp(a)            sys.exit(0)        else:            print 'error option'            sys.exit(3)if __name__ == '__main__':    main(sys.argv)