[Python] Swap two values in a numpy array.

Is there something more efficient than the following code to swap two values of a numpy 1D array?

input_seq = arange(64)

ix1 = randint(len(input_seq))
ixs2 = randint(len(input_seq))

temp = input_seq[ix2]
input_seq[ix2] = input_seq[ix1]
input_seq[ix1] = temp

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