我试图创建一个矩阵，内容如下：

[0,1,2]
[3,4,5]
[6,7,8]

然而，我的元素不断重复。我该如何解决这个问题？

import numpy as np

n = 3
X = np.empty(shape=[0, n])

for i in range(3):
    for j  in range(1,4):
        for k  in range(1,7):
            X = np.append(X, [[(3*i) , ((3*j)-2), ((3*k)-1)]], axis=0)

print(X)

结果：

[[ 0.  1.  2.]
 [ 0.  1.  5.]
 [ 0.  1.  8.]
 [ 0.  1. 11.]
 [ 0.  1. 14.]
 [ 0.  1. 17.]
 [ 0.  4.  2.]
 [ 0.  4.  5.]