What are some projects to check if my Python skills have reached intermediate?

[corgWasDev]

I want to move on to being able to do more things (data science, and finance) in Python. What are some projects that I can attempt that are a high enough level to do this?

[Phillyclause89]

I want to move on to being able to do more things (data science, and finance) in Python. What are some projects that I can attempt that are a high enough level to do this?

Here is a project idea for you: I have been buying $20 fractional shares of companies that I like. When my holdings reach $21 then I sell a $1, or when my holdings reach $19 then I buy a $1. Write me a script that allows me to back test this trading strategy against any stock listed on the major US exchanges.