python:practice decorator calaulate_time

from functools import reduce

import time

def  factorial_array(n)

    number=reduce(lambda x,y:x*y,range(1,n+1))

    return number

print( factorial_array(101)

def calaulate_time(func):

    start_time=time.time()

   func()

   end_time=time.time()

return end_time-start_time

print(calaulate_time(factorate_array(101))

原文：https://www.cnblogs.com/alansuny/p/12499619.html