import pexpect
..............................
def execute_cmd(connection, cmd):
    #connection.expect('.*')
    connection.send(cmd)
    connection.expect('.*')
    return connection.before + '\n' + connection.after
   
def execute_remote_command(cmd, host, username='testuser', password='testpass'):
    connection = pexpect.spawn("ssh %s@%s -o 'StrictHostKeyChecking=no' -o 'UserKnownHostsFile /dev/null'" % (username, host), maxread=1)
    connection.expect('.*(P|p)assword.*')
    connection.sendline(password)
    connection.expect('.*')
    output = execute_cmd(connection, cmd)
    return output
   
def get_host_info(host):
    #myclient = hostclient.HostClient([host],sudo=False,username='testuser',password='ironport')
    #output, code = myclient.execute('cat /etc/motd')
    output = execute_remote_command('uname -a', host)                                                                                                                                                              
    return output
   
..................
hosts_to_process = (host1, host2, ... hostN)
  
for item in hosts_to_process:
    print 'Processing %s\n' % item
    with open(fn, 'a') as f:
        host_info = get_host_info(item)
        f.write(item + '\n')
        f.write(host_info)

host1

host2

.....

hostN

connection.expect('.*')

connection.expect('[#$] ')