python中关于Np.hstack()错误的ValueError: all the input arrays must have same number of dimensions
2017-12-20 21:14
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发生这种错误大概率是因为hstack(a,b)中的a和b存在sparse情况，为了解决此类问题，我们可以将np.hstack(a, b)换成np.column_stack(a, b)。
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