What are advanced Python decorators and how do I use them?

What are advanced Python decorators and how do I use them?

Advanced Python decorators are functions that modify the behavior of other functions or methods. They can be used for logging, access control, memoization, and more.

Can you show me an example of a decorator that logs function calls?

Sure! Here's a simple logging decorator:

import functools

def log_function_call(func):
    @functools.wraps(func)
    def wrapper(*args, **kwargs):
        print(f'Calling {func.__name__} with {args} and {kwargs}')
        return func(*args, **kwargs)
    return wrapper

@log_function_call
def add(a, b):
    return a + b

How can I apply multiple decorators to a single function?

You can stack decorators by applying them one after the other. For example:

@decorator_one
@decorator_two
def my_function():
    pass

What are some common use cases for decorators?

Common use cases include logging, enforcing access control, caching results, and measuring execution time.