I recently told you to use "in" on a dict, and not on dict.keys(). And I was right... but I was also wrong. In this video, I attempt to clarify things, and to show where my benchmarks led me (and maybe you!) astray. Along the way, we look at the differences between dicts and dict views.
Jupyter notebooks for this and all of my videos are at https://github.com/reuven/youTube-not... .