telnet函数

import telnetlib
import time
def telnet_server(telnetip):
    teln = telnetlib.Telnet(host=telnetip,port=23)  #telnet 192.168.56.100
    teln.read_until(b"Password:") #设备会自动弹出Password：输入的选项，输出是以字节字符串
    teln.write("Admin@123\n".encode("utf-8"))  #**输入密码，敲回车
    time.sleep(1)
    teln.write("screen-length 0 temporary\n".encode("utf-8"))
    time.sleep(1)
    teln.write("sys imm\n".encode("utf-8"))
    time.sleep(1)
    teln.write("int g1/0/1\n".encode("utf-8"))
    time.sleep(1)
    teln.write("undo shut\n".encode("utf-8"))
    time.sleep(1)
    teln.write("undo portswitch\n".encode("utf-8"))
    time.sleep(1)
    teln.write("ip add 192.168.10.254 24\n".encode("utf-8"))
    time.sleep(1)
    teln.write("int g1/0/2\n".encode("utf-8"))
    time.sleep(1)
    teln.write("undo shut\n".encode("utf-8"))
    time.sleep(1)
    teln.write("undo portswitch\n".encode("utf-8"))
    time.sleep(1)
    teln.write("ip add 192.168.20.254 24\n".encode("utf-8"))
    print(teln.read_very_eager().decode("utf-8"))
telnet_server("192.168.56.100")
telnet_server("192.168.56.101")
telnet_server("192.168.56.102")