索引器错误:元组索引超出范围,尝试集成函数时出错

我试图计算函数的值 f_integ ,这是功能整合的结果 f 从0到 x_v .

   f = lambda x : x + 1

    def f_integ(x_array):
        int_result = np.zeros_like(x_array)
        indexes = np.shape(x_array)[0]
        for ind in range(indexes):
            x_v = x_array[ind]
            int_result[ind] = integ.quad(f, 0.0, x_v)[0]
        return int_result

    C = f_integ(1)
    print "C", C

Traceback (most recent call last):
  File "untitled.py", line 117, in <module>
    C = f_integ(1)
  File "scr1.py", line 110, in f_integ
    indexes = np.shape(x_array)[0]
IndexError: tuple index out of range

我知道 quad() 返回一个元组,但我不知道如何将数字作为参数放入积分结果中。我是Python新手,请帮忙。