__init__.py 文件源码

def rate_limit(wait_length):
    last_time = 0

    def decorate(f):
        @wraps(f)
        def rate_limited(*args, **kwargs):
            nonlocal last_time
            diff = perf_counter() - last_time
            if diff < wait_length:
                sleep(wait_length - diff)

            r = f(*args, **kwargs)
            last_time = perf_counter()
            return r
        return rate_limited
    return decorate