What is the decorator pattern in Python?

What is the decorator pattern in Python?

The decorator pattern is a design pattern that allows behavior to be added to individual objects, either statically or dynamically, without affecting the behavior of other objects from the same class.

Can you give me an example of how to implement it?

Sure! Here's a simple example:

def decorator_function(original_function):
    def wrapper_function():
        print('Wrapper executed before {}'.format(original_function.__name__))
        return original_function()
    return wrapper_function

@decorator_function
def display():
    return 'Display function executed'

display()  # This will show the wrapper message before the display function.

What are the benefits of using decorators?

Decorators help in code reusability, separation of concerns, and can enhance the functionality of existing code without modifying it.

Are there any built-in decorators in Python?

Yes, Python has several built-in decorators like @staticmethod, @classmethod, and @property that are commonly used.