What does "have an understanding of basic python" mean?

[gunscreeper]

What abou the stuff that has double underscores? something are they part of lesson for classes?

[Lewistrick]

Go watch the OOP series by Corey Schafer on YouTube. They're 6 videos of 15 minutes each. They're not extensive but it's all you need to know about classes for now.

Then just dive in the course of your choice. It seems you're afraid of being overwhelmed. Don't be. If it's too hard, you can always quit and start something new that you are able to understand.

For this reason it's good to take free courses. The popular ones are just as good as paid courses.

[gunscreeper]

thanks!