Keep the last fews elements from a list

deque.py

#Give a list with N elements need to get 3 last elements from a list
# [1,4,2,4,1,2,3,5,6,3]
# The first solution  that comes my head is iter about it and use append, pop or delete but
# there is a more elegant solution with a  collection "datatypes" is an awesome feature.


import collections
numbers_list = [1,4,2,4,1,2,3,5,6,3]
last_three_numbers =  collections.deque(numbers_list, 3)


#Result is deque([5, 3, 7], maxlen=3)

#Here deque method is a useful one to get items according to length for this case 3
#deque object has a lot features to work is a list-like with pop, reverse, extend apendleft and so on.