详细讲解Python接入Telnet和SSH的两种方法：以Telnet为例

#!/usr/bin/env python
# coding=utf-8
 
import time
import telnetlib
import logging
 
__author__ = 'Evan'
 
save_log_path = 'result.txt'
file_mode = 'a+'
format_info = '%(asctime)s - %(filename)s[line:%(lineno)d] - %(levelname)s: %(message)s'
 
logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)
 
# 添加记录 记录器功能
fh = logging.FileHandler(save_log_path, mode=file_mode)
fh.setLevel(logging.DEBUG)
fh.setFormatter(logging.Formatter(format_info))
logger.addHandler(fh)
# 增加显示 记录器功能
ch = logging.StreamHandler()
ch.setLevel(logging.DEBUG)
ch.setFormatter(logging.Formatter(format_info))
logger.addHandler(ch)
 
 
def telnet_handle(host='', port=''):
    handle = telnetlib.Telnet(host, port, timeout=10)
    handle.set_debuglevel(2)  # Display connect info (send command & received info)
    logger.debug('Connect host: {} port: {} successful'.format(host, port))
 
    try:
        #获取登录提示‘login：' 后输入密码。
        handle.read_until('login:', timeout=5)
 
        #发送命令 登录，用户名：admin 密码：admin
        handle.write('admin\n')  #用户名
        #如果有输入密码的提示符可以打开这一条，并修正确的密码提示符
        #handle.read_until('输入密码提示符', timeout=5)
        time.sleep(1)
        handle.write('admin\n')  #密码
        time.sleep(1)
        handle.write('en\n')  #执行指令
        time.sleep(1)
        handle.write('sys\n')  #执行指令
        time.sleep(1)
        handle.write('display running-config\n')  #执行指令
        time.sleep(1)
        handle.write('show stack\n')  #执行指令
        time.sleep(1)
 
        #读取所有信息
        result = handle.read_very_eager()  
        logger.info('Received info: {}'.format(result))
    finally:
        handle.close()
 
if __name__ == '__main__':
    telnet_handle(host='192.168.10.1', port='23')