import telnetlib

HOST = "10.102.1.12"
#方式1
tn = telnetlib.Telnet(HOST, port=21, timeout=10)

#方式2
tn = telnetlib.Telnet()
tn.open(HOST, port=21)

Telnet.write(buffer)

tn.write(b"exit\n")

tn = telnetlib.Telnet()
#方式1
tn.close()
#方式2
tn.write(b"exit\n")

import getpass
import telnetlib

HOST = "10.102.1.12"
user = input("Enter your remote account: ")
password = getpass.getpass()

tn = telnetlib.Telnet(HOST, port=21, timeout=10)

tn.write(user.encode('ascii') + b"\n")
if password:
    tn.write(password.encode('ascii') + b"\n")

print(tn.read_very_eager().decode('ascii'))

tn.write(b"exit\n")

print ("exit")

C_parse_excel.py類用于解析excel，獲取命令及返回結(jié)果：

# -*- coding: utf-8 -*-

import os
import sys
import re
import xlrd
import logging

logging.basicConfig(level=logging.NOTSET, format='[%(filename)s:%(lineno)d]-%(levelname)s %(message)s')


class CCsrConfig(object):

    def __init__(self, excelName):
        self._registerDict = {}
        self._excelName = excelName

    def OpenExcel(self):
        if self._excelName == "":
            self._excelName = None
        else:
            self._excelfd = xlrd.open_workbook(self._excelName)
            for sheetName in self._excelfd.sheet_names():
                pass

    def ReadCSRCfg(self):
        return_dict = {}  #{sheetName: [cmdlist]}
        for sheetName in self._excelfd.sheet_names():
            tmp_list = []
            sheet = self._excelfd.sheet_by_name(sheetName)
            if None != sheet:
                if sheet.nrows == 0:  # no content
                    continue
            sheetName = str(sheetName.strip()).lower()
            logging.debug(sheetName)
            row_start = 0
            for row in range(sheet.nrows):
                if sheet.cell(row, 0).value.strip() == u"command":
                    row_start = row + 1
                    break
            for row in range(row_start, sheet.nrows, 1):
                cmd = str(sheet.cell(row, 0).value).strip()
                exp_ret = str(sheet.cell(row, 1).value).strip()
                tmp_list.append([cmd, exp_ret])
            return_dict[sheetName.lower()] = tmp_list
        return return_dict

# -*- coding:utf-8 -*- 

import logging
import telnetlib
import time

class TelnetClient():
    def __init__(self,):
        self.tn = telnetlib.Telnet()

    # 此函數(shù)實(shí)現(xiàn)telnet登錄主機(jī)
    def login_host(self, host_ip, remote_port, username, password):
        try:
            self.tn.open(host_ip, port = remote_port)
        except:
            logging.warning('%s網(wǎng)絡(luò)連接失敗' % host_ip)
            return False
        # 等待login出現(xiàn)后輸入用戶名，最多等待10秒
        self.tn.read_until(b'login: ', timeout=2)
        self.tn.write(username.encode('ascii') + b'\n')
        # 等待Password出現(xiàn)后輸入用戶名，最多等待10秒
        self.tn.read_until(b'Password: ', timeout=2)
        self.tn.write(password.encode('ascii') + b'\n')
        # 延時(shí)兩秒再收取返回結(jié)果，給服務(wù)端足夠響應(yīng)時(shí)間
        time.sleep(2)
        # 獲取登錄結(jié)果
        command_result = self.tn.read_very_eager().decode('ascii')
        if 'Login incorrect' not in command_result:
            logging.debug(u'%s登錄成功' % host_ip)
            return True
        else:
            logging.warning(u'%s登錄失敗，用戶名或密碼錯(cuò)誤' % host_ip)
            return False

    def start_test_cmd(self, cmd_dict):
        for sheet_item in cmd_dict:
            for sheet in sheet_item:
                cmd_list = sheet_item[sheet]
                tmp_err_list = []
                for cmd in cmd_list:
                    cmd_in = cmd[0]
                    exp_ret = cmd[1]
                    self.tn.write(cmd_in.encode('ascii')+b'\n')
                    time.sleep(1)
                    # 獲取命令結(jié)果
                    command_result = self.tn.read_very_eager().decode('ascii')
                    if command_result.find(exp_ret) == -1:
                        tmp_err_list.append([cmd_in, command_result])
                    else:
                        print('%s' % command_result)

                if len(tmp_err_list) != 0:  # 將錯(cuò)誤信息記錄到文件中
                    with open("./out_file/%s_err_log.txt" % sheet, "w+", newline="") as f:
                        for err_item in tmp_err_list:
                            logging.debug(err_item[0])
                            f.write("%s" % err_item[0])
                            f.write("%s" % err_item[1])

    # 退出telnet
    def logout_host(self):
        self.tn.write(b"exit\n")

# -*- coding:utf-8 -*- 

import logging
import os
import sys
from C_telnet import *
from C_parse_excel import *

Host_ip = '192.168.17.128'
Username = 'admin'
Password = 'admin'
Remote_port = 8000

def parse_cmd_excel(dir_name):
    objList = []
    list_f = os.listdir(dir_name)
    for item in list_f:
        item = dir_name + item
        if os.path.isfile(item) and (item[-5:] == '.xlsx' or item[-5:] == '.xlsm'):
            if item.find("$") != -1:
                continue            
            csrConfig = CCsrConfig(item)
            csrConfig.OpenExcel()
            tmp = csrConfig.ReadCSRCfg()
            objList.append(tmp)
        elif os.path.isdir(item):
            item = item + '/'
            new_obj_list = []
            new_obj_list = parse_cmd_excel(item)
            for each in new_obj_list:
                objList.append(each)
                
    return objList

if __name__ == '__main__':
    # 從表格中獲取測(cè)試的命令
    all_cmd_dict = {}
    all_cmd_dict = parse_cmd_excel("./src_file/")

    #啟動(dòng)telnet客戶端連接，并進(jìn)行測(cè)試
    telnet_client = TelnetClient()
    if telnet_client.login_host(Host_ip, Remote_port, Username, Password) == False:
        print("Telnet disconnected!\n")
    else:
        telnet_client.start_test_cmd(all_cmd_dict)
        telnet_client.logout_host()