Python自动连接ssh的方法

#!/usr/bin/python#-*- coding:utf-8 -*-import sys, time, ostry:  import pexpectexcept ImportError:  print """    You must install pexpect module  """  sys.exit(1)addr_map = {  'v3' :('root@192.168.1.162', 'sina@2009'),  'dev':('test016@192.168.1.136', 'test016'),}try:  key = sys.argv[1]  host = addr_map[key]except:  print """    argv error, use it link    jssh v3, v3 must defined in addr_map  """  sys.exit(1)server = pexpect.spawn('/usr/bin/ssh %s' % host[0])server.expect('.*ssword:')server.sendline(host[1])server.interact()