total = 1.0
# 初始化阶乘为1(0! = 1)
factorial = 1
# 计算从1到n的每一项并累加
for i in range(1, n + 1):
factorial *= i # 计算i的阶乘
total += 1 / factorial # 累加1/i!到总和
return total
total = 1.0
# 初始化阶乘为1(0! = 1)
factorial = 1
# 计算从1到n的每一项并累加
for i in range(1, n + 1):
factorial *= i # 计算i的阶乘
total += 1 / factorial # 累加1/i!到总和
return total