I notice you stated you liked working with Python and HTML, so why not make a webpage? You can also generate an income with a webpage, with ads, games, selling... You can also program webpages in python/HTML, example using django web framework. You could even program games for the browser using javascript.

Sometimes it's a hit or miss, you either make money or you don't. Then you might look into developing something new, but it will probably be better then the last project because you will have more experience.

Python is more of a scripting language then anything. It's commonly used with other languages. As someone else stated you could also use pygame, or even use python with OpenGL and write the entire game in pure python.

C# is also a good candidate to make games at a faster pace. Easy to learn and easy to work with but limited on the platforms.

If you have a good idea, some good progress and you feel you need some money, well you could always start a campaign for funds example indiegogo.com, kickstarter.com.... are great sites where you could start a campaign, tell others about your ideas. If people like your idea then you will probably get a bunch of donations.

You might even want to look into working with a team(independent small company or just people like your self who want to do this on the side).

Honestly there are tones of possibilities out there, you just need to find what works for you, and have an end goal. Games take time and dedication!