Please correct this python script to send data on USB0 port?

edit

#!/usr/bin/env python

from serial import Serial
from time import sleep

class Create:

    def __init__(self, tty="/dev/ttyUSB0"):

        self.timeout = 5
        self.port = Serial(tty, 57600, timeout= self.timeout)


    def start(self):


        self.__sendNow(P,0,0,0)
        sleep(1)
        self.__sendNow(V,0,0,100)
        sleep(10)


    def stop(self):

        self.__sendNow(V,0,0,0)

/home/admin-pc/mywork/test/scripts/create.py: line 1: This module provides a class wrapping an Exia.: command not found
from: can't read /var/mail/serial
from: can't read /var/mail/time
/home/admin-pc/mywork/test/scripts/create.py: line 6: class: command not found
/home/admin-pc/mywork/test/scripts/create.py: line 7: Wrapper class for the iRobot Create: command not found
/home/admin-pc/mywork/test/scripts/create.py: line 9: syntax error near unexpected token ('/home/admin-pc/mywork/test/scripts/create.py: line 9: def __init__(self, tty="/dev/ttyUSB0"):'