keep a python script always running on aws

#to start up a window that will run even after ssh disconnect
tmux new -s mywindow
#to reconnect to that window after ssh reconnect
tmux a -t mywindow

Here is what the above code is Doing:
1. It creates a new session named mywindow.
2. It creates a new window in that session.
3. It attaches to the session named mywindow.
4. It attaches to the window in that session.