Sending data from RaspberryPi to AWS IoT Core Shadow (Python)

This is a video which shows how to get your AWS IoT Core Thing Shadow updating in real time. This assumes you already have your thing setup with the certificate and private key downloaded onto the Raspberry Pi. There are plenty of other tutorials that show you how to do it. I thought I'd show you the part that I got stuck on, that I struggled to find a solution for online. So, hopefully this helps. Thanks.