Defining a list in Python is easy—just use the bracket syntax to indicate items in a list, like this: list_of_ints = [1, 2, 3] Items in a list do not have to all be the same type; they can be ...

which can be any Python object. You use a key to obtain its related values, and the lookup time for each key/value pair is highly constant. In other languages, this type of data structure is ...