python module telnetlib - ghdrako/doc_snipets GitHub Wiki

import telnetlib

ip = "10.10.10.1"
user = "admin"
password = "cisco

tel = telnetlib.Telnet(ip, 23, timeout=1)
tel.read_until(b"Username:")
tel.write(user.encode('ascii') + b"\n")
tel.read_until(b"Password:")
tel.write(password.encode('ascii') + b"\n")

tel.write(b"show ip interface brief\n")
tel.write(b"exit\n")

print(tel.read_all().decode('ascii'))

When we run the telnet connection script, the code may give an error or never finish, so we need to add the try…except statement in the while statement to avoid any problems.