python计算阶乘和的方法(1!+2!+3!+...+n!)

n = int(input())jie = 1sum = 0i = 1while n >= i:  jie = jie * i  sum = sum + jie  i = i + 1print(sum)

def jie(n):  if n == 1:    return 1  else:    return n*jie(n-1)n = int(input())sum = 0if n < 1 or n > 40:  print("请重新输入数据")else:  for i in range(1,n+1):    sum = sum + jie(i)  print(sum)