numpy.random.permutation()

numpy.random.permutation

numpy.random.permutation(x)

Randomly permute a sequence, or return a permuted range.

If x is a multi-dimensional array, it is only shuffled along its first index.

Parameters:	x : int or array_like If x is an integer, randomly permute np.arange(x). If x is an array, make a copy and shuffle the elements randomly.
Returns:	out : ndarray Permuted sequence or array range.

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