On 21 Feb., 07:38, Carl Banks <pavlovevide... at gmail.com> wrote: > Numpy arrays can share underlying data like that when you take > slices. For instance, this probably works the way you want: > > a = numpy.array([1,2,3,4,5,6]) > b = a[:3] > c = a[3:] > > None of the actual data was copied here. Hmm, that might be worth looking into. Thanks.