np.random.permutation(60000)

np.random.permutation(60000)是一个使用numpy.random.permutation函数生成一个随机排列的长度为60000的数组。通过使用np.random.permutation函数，可以实现对给定的序列进行随机排列。这里的60000表示数组的长度。每次调用np.random.permutation函数，都会生成一个新的随机排列的数组。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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