What are the best practices for using decorators in Python?

What are the best practices for using decorators in Python?

When using decorators in Python, it's important to keep them simple, avoid side effects, and ensure they are reusable.

Can you give me an example of a simple decorator?

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

How can I apply multiple decorators to a single function?

You can stack decorators by applying them one after the other, like this:

@decorator_one
@decorator_two
def my_function():
    pass

What should I avoid when creating decorators?

Avoid using decorators that modify the function's signature or behavior in unexpected ways, and be cautious with stateful decorators.