On Sat, May 29, 2010 at 13:35, Keith Goodman <kwgood...@gmail.com> wrote: > np.random.shuffle: "Modify a sequence in-place by shuffling its contents." > > Matches doc string: > >>> a = np.arange(10) >>> np.random.shuffle(a[:-1]) >>> a > array([0, 7, 8, 4, 3, 6, 2, 1, 5, 9]) > > Doesn't match doc string: > >>> l = range(10) >>> np.random.shuffle(l[:-1]) >>> l > [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
This behavior does match the doc-string. l[:-1] creates a new list unconnected to the original list. np.random.shuffle() then shuffles that new list in-place. > Is there any way for numpy to catch this? Nope. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion