如何在装饰器中定义关联？

def call_counter(func):
    count = 0  # 这是与被装饰函数关联的状态

    def wrapper(*args, **kwargs):
        nonlocal count
        count += 1
        print(f"{func.__name__} has been called {count} times.")
        return func(*args, **kwargs)

    return wrapper

@call_counter
def greet(name):
    print(f"Hello, {name}!")

# 调用函数
greet("Alice")
greet("Bob")

class SharedStateDecorator:
    def __init__(self):
        self.count = 0

    def __call__(self, func):
        def wrapper(*args, **kwargs):
            self.count += 1
            print(f"{func.__name__} has been called {self.count} times.")
            return func(*args, **kwargs)
        return wrapper

shared_decorator = SharedStateDecorator()

@shared_decorator
def greet(name):
    print(f"Hello, {name}!")

@shared_decorator
def farewell(name):
    print(f"Goodbye, {name}!")

# 调用函数
greet("Alice")
farewell("Bob")
greet("Charlie")