How does negative indexing work in python?

Friendly reminder regarding python slice notation for negative indexing. It's covered really well here.

Basically, the last value has an index of -1... second last has an index of -2... and so on.

 +---+---+---+---+---+---+
 | P | y | t | h | o | n |
 +---+---+---+---+---+---+
   0   1   2   3   4   5
  -6  -5  -4  -3  -2  -1

Sample code:

animal_list = ["lion", "wolf", "tiger", "panther"]
print(animal_list[-1]) # Last element in sequence
print(animal_list[-2]) # Second last element in sequence
print(animal_list[-3:]) # Last 3 elements in sequence
print(animal_list[-3:-1])

Sample Output:

panther
tiger
['wolf', 'tiger', 'panther']
['wolf', 'tiger']