What is the difference between decorators and wrappers in Python?

What is the difference between decorators and wrappers in Python?

In Python, decorators are a specific type of wrapper that modify the behavior of a function or method. A wrapper is a more general term that refers to any function that takes another function as an argument and extends its behavior.

Can you give me an example of a decorator?

Sure! Here's a simple example of a decorator that prints 'Hello' before calling the function:

def my_decorator(func):
    def wrapper():
        print('Hello')
        func()
    return wrapper

@my_decorator
def say_hello():
    print('World!')

say_hello()  # Output: Hello
               #         World!

How do I use a wrapper without a decorator?

You can create a wrapper function directly without using the decorator syntax. For example:

def wrapper(func):
    print('Before calling the function')
    func()
    print('After calling the function')

def say_hello():
    print('Hello!')

wrapper(say_hello)  # Output: Before calling the function
                     #         Hello!
                     #         After calling the function