程序代码：

def foo(m):
    if m==1 | m==0 :return 1
    result=1
    while m>0:
        result*=m
        m-=1
    return result    

import random
lst=[]
for i in range(5):
  lst.append(random.randint(10,30))
sum=0
for x in lst:
    sum+=foo(int(x))
    print("%d !=%d"%(x,foo(int(x))))
print(sum)  

========================== RESTART: C:\Python3\1.py ==========================
13 !=6227020800
16 !=20922789888000
25 !=15511210043330985984000000
24 !=620448401733239439360000
16 !=20922789888000
16131658445106077230156800
>>> 

[此贴子已经被作者于2019-5-16 10:44编辑过]