The for Loop

As mentioned above, you use a loop when you want to iterate over something n number of times. It’s a little easier to understand if we see an example. Let’s use Python’s builtin range function. The range function will create a list that is n in length. In Python 2.x, there is actually another function called xrange that is a number generator and isn’t as resource intensive as range. They basically changed xrange into range in Python 3. Here is an example:

As you can see, the range function above took an integer and returned a range object. The range function also accepts a beginning value, an end value and a step value. Here are two more examples: ...