我有以下数组：
[9.975 9.976 9.977 9.978 9.979 9.98 9.981 9.982 9.983 9.984 9.985 9.986
9.987 9.988 9.989 9.99 9.991 9.992 9.993 9.994]
现在，我想将这些值复制到同一行的n列中。结果应如下所示：
[[9.975 9.975 9.975],
[9.976 9.976 9.976],
.....
[9.994 9.994 9.994]]
你知道这怎么可能吗？
提前致谢。
最佳答案
由于您使用的是numpy，请使用np.repeat + np.reshape：
>>> np.repeat(arr, 3).reshape(-1, 3)
array([[9.975, 9.975, 9.975],
[9.976, 9.976, 9.976],
[9.977, 9.977, 9.977],
[9.978, 9.978, 9.978],
[9.979, 9.979, 9.979],
[9.98 , 9.98 , 9.98 ],
[9.981, 9.981, 9.981],
[9.982, 9.982, 9.982],
[9.983, 9.983, 9.983],
[9.984, 9.984, 9.984],
[9.985, 9.985, 9.985],
[9.986, 9.986, 9.986],
[9.987, 9.987, 9.987],
[9.988, 9.988, 9.988],
[9.989, 9.989, 9.989],
[9.99 , 9.99 , 9.99 ],
[9.991, 9.991, 9.991],
[9.992, 9.992, 9.992],
[9.993, 9.993, 9.993],
[9.994, 9.994, 9.994]])