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,reduce(lambda x,y:x*y,list(range(1,i+1)))))
    return result

print('1到%s的阶乘加和结果是：%s'%(5,factorial(5)))

#方法2
def factorial(n):
    result=0

    for i in range(1,n+1):
        rr=1
        for j in range(1,i+1):
            rr*=j
        result+=rr
        print('%s的阶乘加和结果为：%s'%(i,rr))

    return result

print('1到%s的阶乘加和结果是：%s'%(5,factorial(5)))
print('1到%s的阶乘加和结果是：%s'%(4,factorial(4)))