what are tuples used for

Tuples in Python

An immutable data value that contains related elements.
Tuples are used to group together related data,
such as a person’s name, their age, and their gender.

A tuple is the same as a list except uses parenthisies instead of square brackets.
A tuple is also immutable (cant be changed) unlike a list.

Example:
tup1 = ('physics', 'chemistry', 1997, 2000);