As there are no answers in the book to many of the questions. I wanted to ask if my thinking is correct.
It spews out an error because you cannot use a sub-variable to define a primary variable ? Sorry I’m just using my own words and not familiar with the programming lingo.
p/s Since there is no “data” assigned to it per se, so Python doesn’t know what to do with it ? But, it should have derived a value already by working down the lines ?
p/s 2 : Ok I just realized that passengers is missing a “s” …
p/s 3 : Wow, I just realized that the videos are like 10x more instructive than the book itself. What a gem.