Difference between `python` and `python3` on Windows devices

[alexlyttle]

We have noticed differences between these commands on Windows devices, with some pointing to different places or not working at all.

Examples

• A user installed python by typing it into Git Bash and downloading from the Microsoft Store. They were unable to use python3 as it tried to get them to redownload Python.
• A user found that python3 would point to their system Python but python would point to their virtual environment

Solution

For now, get users to check which python they should use with which command. Decide which points to the correct path and advise they use that.

In the course, we should highlight this early on. There is a point in 1.2 about this, including a troubleshooting section. Perhaps we should draw more attention to this.