netconf选用秘钥登录

#! /usr/bin/python2.7

import ncclient

from ncclient import manager

with manager.connect(
   host="192.168.56.2", 
    port=22, 
   username="client002", 
   hostkey_verify=True, 
    key_filename="private.ppk",
   device_params={'name':'huawei'}) as m:
    c = m.get_config(source='running').data_xml
    with open("%s.xml" % host, 'w') as f:
        f.write(c)