What are wrappers in Python?

What are wrappers in Python?

In Python, wrappers are functions or classes that modify the behavior of another function or class. They are often used for logging, access control, or modifying input/output.

Can you give me an example of a wrapper function?

Sure! Here's a simple example:

def my_wrapper(func):
    def wrapped():
        print('Before calling the function')
        func()
        print('After calling the function')
    return wrapped

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

say_hello()  # This will show the wrapper in action.

What are some common use cases for wrappers?

Common use cases include logging function calls, enforcing access control, caching results, and modifying input or output.

How do decorators relate to wrappers?

Decorators in Python are a specific type of wrapper that allows you to modify the behavior of functions or methods using the @decorator_name syntax.