#!/usr/bin/env python

import paramiko

hostname = '192.168.1.1'
port = 22
username = 'foo'
password = 'xxxYYYxxx'

if __name__ == "__main__":
    #paramiko.util.log_to_file('paramiko.log')
    s = paramiko.SSHClient()
    #s.load_system_host_keys()
    s.set_missing_host_key_policy(paramiko.AutoAddPolicy()) # use this
    s.connect(hostname, port, username, password)
    stdin, stdout, stderr = s.exec_command('pwd')
    print stdout.read()
    s.close()