How to reload Python script?

I am trying out the Pyhon tutorial with boolean variables. I have cloned the controller from github and started the gateway. For some reason the code changes I do aren’t reflected in the simulation.
How do I get the updated code to run?

Well, as you have modified the component’s behavior, you need to reload the system. This is easily donw from the left hand side panel. Click the three buttons next to the system that uses the python script and click reload.

Please get back to me if you have further questions.