What are some examples of wrappers in Python 3.10?

What are some examples of wrappers in Python 3.10?

In Python 3.10, wrappers are often used to modify or enhance functions. For example, you can use a decorator as a wrapper to add functionality.

Can you show me a simple decorator example?

Sure! Here's a simple decorator that logs the execution time of a function:

import time

def timer(func):
    def wrapper(*args, **kwargs):
        start_time = time.time()
        result = func(*args, **kwargs)
        end_time = time.time()
        print(f"{func.__name__} executed in {end_time - start_time} seconds")
        return result
    return wrapper

@timer
def my_function():
    time.sleep(1)
    print("Function is running")

my_function()

What does the @timer syntax do?

The @timer syntax is a decorator that applies the timer function to my_function. It wraps my_function with the additional functionality defined in timer.

Are there any built-in wrappers in Python 3.10?

Yes, Python 3.10 includes built-in decorators like @staticmethod, @classmethod, and @property that serve as wrappers for class methods.