Python Programming with Raspberry Pi

Passing arguments to a function:

A function is always defined with parentheses. The parentheses are used to pass any requisite arguments to a function. Arguments are parameters required to execute a function. In the earlier example, there are no arguments passed to the function.

Let's review an example where we pass an argument to a function:

def add_function(a, b):   c = a + b   print("The sum of a and b is ", c)

In this example, a and b are arguments to the function. The function adds a and b and prints the sum on the screen. When the function add_function is called by passing the arguments 3 and 2 as add_function(3,2) where a is 3 and b is 2, respectively.

Hence, the arguments a and b are required to execute function, or calling the function ...