求输入数字的阶乘 及加和 #s=1!+2!+3!+…..+n!

#s=1!+2!+3!+…..+n! from functools import reduce def factorial(n): result=0 for i in range(1,n+1): result+=reduce(lambda x,y:x*y,list(range(1,i+1))) print('%s的阶乘加和结果为：%s'%(i,r

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