Tuples

Tuples are similar to lists, but can't be changed (immutable) after assignment. This has certain advantages, especially if there is something within the code that once defined should ever change as a part of the code! There are also no methods to add or remove elements, etc., which make them distinct from lists.

A tuple is defined by parentheses, for example,

my_nums = (1,2,3,4)

and tuple elements can be retrieved in a similar way to lists with the appropriate index value.

print(my_nums[3])

Output

4

Again, the indexing for tuples (which is the same as for lists) in Python is zero-based. The first index element is 0, the second is 1, the third is 2, etc. It may take a while to get used to this, but just try to remember the standard ten numbers are 0,1,2,3,4,5,6,7,8,9.

Python Docs for Tuples