telnet question

[jacklee26]

Hi All,
i have some question related to telnet this script. Are we able to login and don't close the session. For example login, and user is able to type in command like that. I saw most of the resource on net, only show login and run some command. Is it possible to just login automatic and stop.
For my script, it will login and run the command. But what i wants is just login, and don't exit the session.

Is python able to do this?

Name: telnet_demo.py

Tesed in python3.5
"""
import telnetlib

HOST = "192.168.1.253"
user = "root"
password = "arrisc4"


def command(con, flag, str_=""):
    data = con.read_until(flag.encode())
    print(data.decode(errors='ignore'))
    con.write(str_.encode() + b"\n")
    return data

tn = telnetlib.Telnet(HOST)
command(tn, "Login:", user)
if password:
    command(tn, "Password:", password)
command(tn, "#", "en")
#command(tn, "$", " exit")
#command(tn, "$", "")
tn.close()