def test(a, k):
    for i in xrange(len(a)/k):
        print a[i*k:(i+1)*k]
    if len(a) % k != 0 :
        print a[-(len(a) % k):]
l = [1, 2, 3, 4, 5, 6]
test(l,5)
[1, 2, 3, 4, 5]
[6]

def group(iterable, count):
    a = []
    for i in xrange(0, len(iterable), count):
        a.append(iterable[i: i+count])
    return a

print group(range(10), 4)

def group(iterable, count):
    return [iterable[i: i+count] for i in xrange(0, len(iterable), count)]

print group(range(10), 4)

>>> def f(seq, n):
...     assert n > 0
...     lst, x = [], 0
...     for i in seq:
...         lst.append(i)
...         x += 1
...         if x == n:
...             yield lst
...             lst, x = [], 0
...     if lst:
...         yield lst
... 
>>> list(f([1, 2, 3, 4, 5], 2))
[[1, 2], [3, 4], [5]]
>>>

def group(iterable, count):
    return zip(*[iter(iterable)] * count)

>>> a = [1,2,3,4,5,6]
>>> zip(*[iter(a)] * 5)
[(1, 2, 3, 4, 5)]

>>> for i in izip_longest(*[iter(a)] * 5): print i
...
(1, 2, 3, 4, 5)
(6, None, None, None, None)
>>>