As others mentioned, be sure that your curriculum covers all the requirements for graduating high school, and you’ll also want to make sure you cover requirements for your own state universities. Your college counselor should be able to double check this coursework for you.
The following FAQ gives an outline of the standard high school curriculum that selective colleges expect to see:
Linear algebra and python aren’t necessary for admission to any university. You’ll only want to consider courses like these if you have additional space in your schedule after fitting in all the coursework in the above FAQ (or if you’ve run out of math classes at your high school and you need a math class to take as a senior).