On Sat, May 29, 2010 at 11:45 AM, Robert Kern <robert.k...@gmail.com> wrote: > 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.
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