problem with python telnetlib

Question

Im having trouble using the telnetlib in python, when Im doing a telnet call from the shell, everything works ok but when I do it from python, the server(that is a virtual machine) crashes. The question is: what is the different between the python telnet call and the shell telnet call?

#!/usr/bin/python

import telnetlib
import socket
import sys

def ConnectToVM():

    host = "192.168.236.3";
    port = 8110;

    try:     
        tn = telnetlib.Telnet(host, port);

    except (socket.error, EOFError) as  e:
        print(e);


def main():
    ConnectToVM();

#anropa main
main();