What are some examples of Python decorators?

What are some examples of Python decorators?

Python decorators are functions that modify the behavior of another function. Here are a few examples:

1. Logging Decorator: Logs the execution of a function.
2. Timing Decorator: Measures the time a function takes to execute.
3. Authorization Decorator: Checks if a user is authorized to execute a function.

Can you show me the code for a logging decorator?

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 arguments {args} and {kwargs}')
        return func(*args, **kwargs)
    return wrapper

@log_function_call
def my_function(x, y):
    return x + y

What about a timing decorator?

Here's a timing decorator that measures the execution time:

import time
import functools

def time_function(func):
    @functools.wraps(func)
    def wrapper(*args, **kwargs):
        start_time = time.time()
        result = func(*args, **kwargs)
        end_time = time.time()
        print(f'{func.__name__} took {end_time - start_time:.4f} seconds')
        return result
    return wrapper

@time_function
def my_function(x, y):
    time.sleep(1)  # Simulate a delay
    return x + y