"""
先导入模块
"""
import telnetlib
import time
 
 
# 将IP地址,用户名，密码分别赋给变量host，username,password
host = "1.1.1.1"
Username = "huawei"
password = "huawei"
 
tn = telnetlib.Telnet(host)
 
# 输入用户名和密码登入设备
tn.read_until(b"Username:")
tn.write(Username.encode("ascii")+b"\n")
tn.read_until(b"Password:")
tn.write(password.encode("ascii")+b"\n")
 
# 执行命令
# 滚动显示
tn.write(b"screen-length 0 temporary \n")
tn.write(b"dis cu \n")
time.sleep(2)
 
 
# 显示结果
print(tn.read_very_eager().decode("ascii"))
 
 
tn.close()