How do I use functions in Python?

How do I use functions in Python?

In Python, functions are defined using the 'def' keyword followed by the function name and parentheses. For example:

def my_function():
    print('Hello, World!')

You can call this function by using its name followed by parentheses: my_function().

Can you explain parameters and return values?

Sure! Parameters are variables that you can pass into a function. For example:

def greet(name):
    return f'Hello, {name}!'

The function greet takes a parameter name and returns a greeting. You can call it like this: greet('Alice').

What if I want to use default parameters?

You can set default values for parameters by assigning them in the function definition. For example:

def greet(name='Guest'):
    return f'Hello, {name}!'

Now, if you call greet() without an argument, it will return 'Hello, Guest!'.

How do I handle multiple return values?

You can return multiple values as a tuple. For example:

def get_coordinates():
    return (10, 20)

You can unpack the values like this:

x, y = get_coordinates()