Python 3 latest code crumbs

Finish the function so it returns the last element of the given list. You may assume the list is not empty....

A range is an iterable object, and this object can return an iterator that keeps track of its current state. Suppose we create a range with the call range(3). This returns an object of type range with our requested settings....

We don't always want to start counting at zero, and that's why we can also call range with both a start and stop value. A call to range(2, 5) will return the values 2, 3, and 4....

If we call Python's range with one argument, that argument is the stop value. In this case, range will start counting at 0 until it reaches the stop value. For example, if we call range(5), the created range object will...

There’s no magic to creating your own iterator. I’ll demonstrate with a simple iterator class that returns even numbers. As we’ve learned, we need to implement __iter__ and __next__. We’ll do this in one single class, to keep things simple....

As you hopefully know, we can't divide by the number zero. If we do so anyway, Python will throw an exception called ZeroDivisionError, which is a subclass of ArithmeticError. When can catch this exception with a Python try except block....