How to define a function?

To define a function in Python, you use the def keyword followed by the function name and parentheses containing any parameters. Here's the basic syntax:

def function_name(parameters):
    # Function body
    # Code to execute
    return value  # Optional

Example

Here's a simple example of a function that adds two numbers:

def add_numbers(a, b):
    return a + b

Explanation:

1. def: This keyword starts the function definition.
2. add_numbers: This is the name of the function.
3. (a, b): These are parameters that the function takes as input.
4. Function Body: The code inside the function that performs the operation.
5. return: This keyword sends back a value from the function.

Calling the Function

You can call the function like this:

result = add_numbers(3, 5)
print(result)  # Output: 8

Feel free to ask if you need more examples or explanations!