import time

#装饰器函数
def cal_time(func):                                                      #接收被装饰函数
    def wrapper(*args, **kwargs):                                        #接收被装饰函数的参数
        start_time = time.time()
        result = func(*args, **kwargs)
        end_time = time.time()
        consume_time = end_time - start_time
        print(f"Function executed in {consume_time:.6f} seconds")
        return result
    return wrapper                                                       #将被装饰函数替换为wrapper函数

@cal_time

#斐波那契数列(生成器)
def fb_sq(n):
    a, b = 0, 1
    for _ in range(n):
        a, b = b, a + b
    return a
print((fb_sq(100000)))

@cal_time
#斐波那契数列(普通循环)
import time
start_time = time.time()
n = 1000                 #生成斐波那契数列的项数，可修改
result = []
a, b = 0, 1
for i in range(n):
    a, b = b, a + b     #a是前一步的b，b是前一步的a+b
    result.append(a)
print(result)
end_time = time.time()
print(f"function excuted in {end_time-start_time} s")