Find the last element of a list

The following is a simple solution to the problem of defining a function to find the last element of a list. Note that you do not need to write a single line of code to make the doctest work.

>>> def last(some_list):
...     return some_list[-1]
>>>
>>> a_list = [0, 1, 2, 3, 4, 5, 6, 7]
>>> last(a_list)
7
>>> another_list = ['a', 'b', 'c', 'd', 'e', 'f']
>>> last(another_list)
'f'

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