新人求助，用python

Question

新人求助，用python

Answer 1

n = int(input('请输入一个整数：'))


def jisuan(n):
    s = 0
    for i in range(1,n+1):
        if i % 2 == 0:
            s -= 1 / i
        else:
            s += 1 / i
    print(round(s,4))
jisuan(n)