Python基础题目——s=1+1/3-1/5+1/7-1/9…前n项和

计算s=1+1/3-1/5+1/7-1/9…前n项和

def sum(n):
    total_sum = 0.0
    for k in range(1, n + 1):
        term = (-1)**(k + 1) / (2 * k - 1)
        total_sum += term
    return total_sum

n=int(input())
result = sum(n)
print(result)

样例输入：10

样例输出：0.7604599047323508