#错误……
import time

def cal_time(func):                   #传递被装饰函数
    def transfer(*args):              #传递被装饰函数的参数
        start_time = time.time()
        result = func(*args)
        end_time = time.time()
        # consume_time = end_time - start_time
        print(f"运行时间: {end_time - start_time:.3f}秒")
        return result
    return transfer
@cal_time
def fb_sq(n):
    if n <= 1:
        yield n  # 递归出口，直接返回n的值
    else:
        # 递归获取前两项的值并相加
        yield next(fb_sq(n-1)) + next(fb_sq(n-2))
print(next(fb_sq(10)))