numpy.random.shuffle(x)的用法

numpy.random.shuffle(x)

Modify a sequence in-place by shuffling its contents.

Parameters:	x : array_like The array or list to be shuffled.
Returns:	None

Examples

>>>

>>> arr = np.arange(10) >>> np.random.shuffle(arr) >>> arr [1 7 5 2 9 4 3 6 0 8] 

This function only shuffles the array along the first index of a multi-dimensional array:

>>>

>>> arr = np.arange(9).reshape((3, 3)) >>> np.random.shuffle(arr) >>> arr array([[3, 4, 5],  [6, 7, 8],  [0, 1, 2]])