Hands-On Data Structures and Algorithms with Python - Second Edition

Learning about tuples

Tuples are immutable sequences of arbitrary objects. A tuple is a comma-separated sequence of values; however, it is common practice to enclose them in parentheses. Tuples are very useful when we want to set up multiple variables in one line, or to allow a function to return multiple values of different objects. Tuple is an ordered sequence of items similar to the list data type. The only difference is that tuples are immutable; hence, once created they cannot be modified, unlike list. Tuples are indexed by integers greater than zero. Tuples are hashable, which means we can sort lists of them and they can be used as keys to dictionaries.

We can also create a tuple using the built-in function: tuple(). With no argument, ...