#!/usr/bin/env pythonfrom fabric.api import *from fabric.context_managers import *from fabric.contrib.console import confirmenv.user = 'root'env.hosts = ['192.168.1.23','192.168.1.24']env.password = '123456' @runs_oncedef tar_task(): #本地打包任務函數，只限執行一次  with lcd('/'):    local("tar zcvf auto.tar.gz auto") def put_task():  run('mkdir /data') #上傳任務函數  with cd("/data"):    with settings(warn_only=True):      result = put("/auto.tar.gz","/data") #put上傳出現異常時繼續執行，非中止    if result.failed and not confirm("put file failed, Continue[Y/N]?"):      abort('Aboring file put task!') #出現異常時，確認用戶是否繼續 def check_task():  with settings(warn_only=True):    lmd5 = local("md5sum /auto.tar.gz",capture=True).split(' ')[0]    rmd5 = run("md5sum /data/auto.tar.gz").split(' ')[0]    if lmd5 == rmd5: #對比本地及遠程文件MD5信息      print "ok"    else:      print ERRORdef go():  tar_task()  put_task()  check_task()