Python lists are a handy tool to help in several ways:
(A) There can be a help when iterating through a large dataset if looking for specific items.
(B) It is possible to use them as lookup values if checking for a particular value.
(C) To have a list of things that need to be checked against, if updated regularly, then lists are helpful here.
(D) If you have a list, by converting to a dataframe, it can be sliced and diced as need be, see Dataframes Posting for more videos on that subject.
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