A list is a mutable collection of items in sequence.
They are an extremely flexible and useful data structure that many built-in methods and operations in Python produce as output.
Lists can hold reference to any (or multiple) data type(s) - including other lists or data structures such as tuples, sets, or dicts.
Content can be iterated over using for item in <list> construct.
If indexes are needed with the content, for index, item in enumerate(<list>) can be used.
Elements within a list can be accessed via 0-based index number from the left, or -1-based index number from the right.
Lists can be copied in whole or in part using slice notation or <list>.copy().