Functions

Functions are incredibly useful when you want to increase code readability. You can think of them as blocks of code outside the main flow of code. Functions are executed once they are called in the main code.

You write a function like this:

def division(a, b):
    result = a / b
    return result
d = division(3, 5)
print(d)

The first three lines are a newly created function called division, and the last two lines are part of the main code.

You can create a function by writing def and then writing the function's name. After the name, you put brackets and within them write the arguments of the function; these are some variables that you will be able to use inside of your function and are a part of the connection between the main code and the function. In this case, our function takes two arguments: a and b.

Then, once we enter our function, what we do is calculate a divided by b and call this division result. Then, in the last...