Hi,
To prevent further (possibly many) topics, I name this topic as errata so anything I doubt in the future will be asked only in this topic.
In Merge section, I’m not sure whether at the time you wrote this lecture, the default argument for how was ‘left’. In version 1.0.5, the default argument is “inner” instead of “left”.
Yeah, pandas has it’s 1.0.0 version earlier this year, so there are some changes, and this is one of them. Thanks.
Thank you @Arm_Nakornthab – I actually didn’t even know they had changed the default behavior (I like to explicitly specify certain important arguments, like how, for this exact reason)
Your careful reading of the document continues to be very helpful. Thank you for being willing to post these errata/questions.