This is the best lecture. If you really want to implement backtesting with a high degree of freedom, I highly recommend that you take this lecture. Even those who are new to Python or MySQL can take this course. I vaguely know Python and have never used MySQL, but I was able to complete the course by following what the instructor taught me. For those who feel the limitations of backtesting with Excel, I think this lecture will be the answer. Lastly, I would like to thank the instructor for providing such a high-quality lecture at such a low price.