Tuples in Python
A tuple is a sequence data type like the list.
But the difference is that a tuple is immutable which means that the contents in a tuple cannot be changed.
Like how lists use square brackets , tuples use parentheses ().
Items should be separated by comma (,) and using parentheses (()) is optional.
An empty tuple is constructed by using two parentheses (()) with nothing inside.
To construct a tuple with a single value we must include a comma (,) after that value, even though we have only one value.