The Python Quiz

Python uses zero-based indexing. That means, the first element has an index 0, the second has index 1, and so on. The full slice syntax is: start:stop:step. start refers to the index of the element which is used as a start of our slice. stop refers to the index of the element we should stop just before to finish our slice. step allows you to take each nth-element within a start:stop range. (railsware.com/blog/python-for-machine-learning-indexing-a...)