class CallCounter:
    def __init__(self, func):
        self.func = func
        self.count = 0
<pre class="brush:python;toolbar:false;">def __call__(self, *args, **kwargs):
    self.count += 1
    print(f"{self.func.__name__} 已被调用 {self.count} 次")
    return self.func(*args, **kwargs)

@CallCounter def greet(name): return f"Hello, {name}!"

greet("Alice")  # 输出：greet 已被调用 1 次
greet("Bob")    # 输出：greet 已被调用 2 次
print(greet.count)  # 输出：2

def call_counter(func):
    count = 0
    def wrapper(*args, **kwargs):
        nonlocal count
        count += 1
        print(f"{func.__name__} 已被调用 {count} 次")
        return func(*args, **kwargs)
    wrapper.count = lambda: count  # 提供访问接口（可选）
    return wrapper
<p>@call_counter
def say_hi():
return "Hi!"</p>

class RateLimiter:
    def __init__(self, max_calls=3):
        self.max_calls = max_calls
        self.calls = 0
<pre class="brush:python;toolbar:false;">def __call__(self, func):
    def wrapper(*args, **kwargs):
        if self.calls >= self.max_calls:
            raise RuntimeError(f"超出调用上限 {self.max_calls}")
        self.calls += 1
        print(f"第 {self.calls} 次调用")
        return func(*args, **kwargs)
    return wrapper

使用

@RateLimiter(max_calls=2) def do_work(): return "done"