3.1.4.5 Lists - collections of data | Operations on lists

Negative indices are legal

It may look strange, but negative indices are legal, and can be very useful.

An element with an index equal to -1 is the last one in the list.

print(numbers[-1])

The example snippet will output 1. Run the program and check. 

Similarly, the element with an index equal to -2 is the one before last in the list.

print(numbers[-2])

The example snippet will output 2.

The last accessible element in our list is numbers[-4] (the first one) - don't try to go any further!

•  Sandbox

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numbers = [111, 7, 2, 1]

print(numbers[-1])

print(numbers[-2])

• Console