# _*_ coding:utf-8 _*_
import numpy as np
def jie(i):
s = 1
for j in range(1, i+1):
s = s * j
return s
x = int(input("请输入x="))
n = int(input("请输入n="))
s = 1
for i in range(1, n+1):
s = s+np.power(x, i)/jie(i)
print(s)e^x=1+x+x^2/2!+x^3/3!+…..+x^n/n!
input()默认输入的是字符，需要转化否则出错
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