(- Coding style, and how to use Python's Black auto-formatting tool for cleaner code
- Common sources of bugs, and how to detect them with static analyzers
- How to structure the files in your code projects with the Cookiecutter template tool
- Functional programming techniques like lambda and higher-order functions
- How to profile the speed of your code with Python's built-in timeit and cProfile modules
- The computer science behind Big-O algorithm analysis
- How to make your comments and docstrings informative, and how often to write them
- How to create classes in object-oriented programming, and why they're used to organize code)