Consecutive, Overlapping Subsets of Array (NumPy, Python)

Question

I have a NumPy array [1,2,3,4,5,6,7,8,9,10,11,12,13,14] and want to have an array structured like [[1,2,3,4], [2,3,4,5], [3,4,5,6], ..., [11,12,13,14]]

Answer 1

Using itertools, and assuming Python 2.6:

import itertools

def byN(iterable, N):
    itrs = itertools.tee(iter(iterable), N)
    for n in range(N):
        for i in range(n):
            next(itrs[n], None)
    return zip(*itrs)

aby4 = numpy.array(byN(thearray, 4))