Let’s look at some samples of using recursion. Sometimes we use t because it is easier to write and maintain. Sometimes it is because it’s about the only way we can. The use of recursion is all around us. One major example is in fractals. A fractal is a never-ending pattern. Fractals are infinitely complex…
We’ve seen examples of where one function calls another. For example inside of main, you see that load_data(), total(), and average() are called. Recursion is where a function, calls itself. As you can see, calling yourself is “easy” but also “dangerous”. You can easily end up in an infinite recursive loop, that is until you…
As with other Python objects, there are the set has several functions and methods to make working with it easier. As with the list, tuple, and dictionary, you can use the len() function to get the number of elements within a set. Adding and Removing Elements Adding Elements As with other mutable objects, you can…
Python’s Dictionary datatype is a class, which means it has methods directly associated with it to make working with that data easier. The clear() method allows you to empty the dictionary of all of it’s data. The get() method works similarly to the [key], where you get the value of the key. The main difference…
We’ve looked at different ways to working with lists using functions and built in methods of the list. But now I want to show you how you might use Python to work with a list that doesn’t use a normal command. Some will be using loops, and operators, others, like copying a list to a…
Previously, when we looked at how you can work with list in Python, we looked some operators and functions. However, a list is a bit more complex, than a normal variable – as you might have already guessed, and not just because you can store more than one value in it. Python also allows you…
We also need to remember that lists are mutable, or able to be changed while the program is running. Consider the following: Being able to store data inside a list is one thing. Accessing each element, one by one, is helpful, but there is so much more that we could do. Insider of having to…
Let’s first look at a void function, as they are the simplest form of function. Additionally, we’re not going to pass any variables into this function. That means, every time it is called, the exact same thing will run. The first line of our function, is called the function header. It starts with def, letting…
