Learning additional programming languages other than HTML,CSS and JS. This is where learning Python comes in. It is easy to learn yet sophisticated and complex enough that it has a huge following in eminent coding circles. It has a simple syntax and is great for writing reusable codes. There are also quite a few packages, frameworks and other full stack web development tools that are widely used. Full stack python is a thing and it is a skill in demand. It makes sense for full stack developers looking for a job and looking to upskill to learn python programming.