In this recipe, we will use the Python Supervisor program that is widely used to launch and manage a bunch of executable programs. Supervisor can be run as a background daemon and can monitor child processes and restart if they die suddenly. We can install Supervisor by simply running the following command:

$pip install supervisor
  

Supervisor works on Python 2.x version - 2.4 and later. However, it does not work under Python 3 at the time of writing. So in order to run this example, you need to have Python 2 installed on your computer.