I am finally getting into the groove after a few renewals. First of all, thank you for making such a great lecture. I came across this lecture while looking for “Efficient Pandas Usage”, and now that I am halfway through, I feel humbled every moment. I am ashamed that I was not even able to properly utilize the basic methods, let alone efficiency. I first met you through the PyCon Lightning Talk last year, and I can see that you are no ordinary person. It is great that you explain advanced methods concisely and easily. Why was it so difficult and time-consuming when I studied alone with the manual and Googlingㅜㅜ I don’t know if you have any plans for follow-up lectures, but I would like to take any lectures you make, regardless of the field. Whether it is web or deep learning. Thank you again. Have a nice day!