numpy.random.shuffle(x)
Modify a sequence in-place by shuffling its contents.
| Parameters: |
x : array_like
|
|---|---|
| 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]])
原文：http://www.cnblogs.com/anyview/p/5021280.html