title: Python - How to extract the last x elements from a list
body: <p>If the length of a python list is greater than a given value (say 10), then I want to extract the last 10 elements in that list into a new list. 
  How can I do this?
  I tried getting the difference between len(my_list) - 10 and use it as: new_list = [(len(my_list) - 10):] which does not work</p>
  
  <p>Any suggestions?
  Thanks in advance</p>