What are some examples of decorators in Python?

What are some examples of decorators in Python?

Decorators in Python are a way to modify or enhance functions or methods. For example, a simple decorator could log the execution time of a function.

Can you show me a code example of a logging decorator?

Sure! Here's a simple logging decorator:

import time

def log_execution_time(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

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

my_function()

What other types of decorators are there?

Other types of decorators include class decorators, property decorators, and decorators for access control, like @login_required in web frameworks.

How do I create a class decorator?

To create a class decorator, you define a function that takes a class as an argument and returns a modified class. Here's a simple example:

def my_class_decorator(cls):
    cls.new_attribute = 'This is a new attribute'
    return cls

@my_class_decorator
class MyClass:
    pass

print(MyClass.new_attribute)  # Output: This is a new attribute