numpy.random.shuffle打乱顺序函数
numpy.random.shuffle(x)Modify a sequence in-place by shuffling its contents.举例
python>>>>>> arr = np.arange(10)>>> np.random.shuffle(arr)>>> arrThis function only shuffles the array along the first index of a multi-dimensional array（多维矩阵中，只对第一维（行）做打乱顺序操作）:
python>>>>>> arr = np.arange(9).reshape((3, 3))>>> np.random.shuffle(arr)>>> arrarray([, , ])This function only shuffles the array along the first index of a multi-dimensional array:
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