How to Add Parameters and Return Values in Python Functions

First the article defines a function with two parameters, shows how to call it with string arguments, and prints each parameter.

def printMyStr(str1, str2):
    print(str1)
    print(str2)

printMyStr("theFirst", "theSecond")

The output displays the two strings, demonstrating that the arguments are bound to the parameter variables inside the function.

Next it introduces a function that returns a value. The function takes two numeric parameters, computes their difference, and returns the result, which is captured in a variable and printed.

def printMyStr(num1, num2):
    return num1 - num2

result = printMyStr(3, 1)
print(result)

The execution prints 2, illustrating that a Python function can return a single value and that the caller can store and use that value.

The article concludes that multiple functions can be defined and invoked in any order, encouraging experimentation with function composition.