On August 22, 2023, Microsoft revealed the preview of “Python in Excel”. As creator of xlwings and author of the O’Reilly book Python for Excel, I was obviously curious to give it a try. Since you shouldn’t judge a book by its cover, I decided to take a deep dive and record a LinkedIn Learning course on Python in Excel: Working with pandas DataFrames. Along the way I discovered many bugs and other issues and reported them on GitHub. All of them are either resolved or at least acknowledged/commen...