>>> def split_list(lst, n):
... out = []
... tmp = []
... for i in lst:
... tmp.append(i)
... if len(tmp) == n:
... out.append(tmp)
... tmp = []
... if tmp:
... out.append(tmp)
... return out
...
>>> def transpose(mtx):
... out = []
... columns = tuple(map(iter, mtx))
... while True:
... outrow = [next(i, None) for i in columns]
... if outrow == [None] * len(outrow):
... break
... out.append(outrow)
... return out
...
>>> lst = list(range(50))
>>> lst
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49]
>>>
>>> split = split_list(lst, 10)
>>> split
[[0, 1, 2, 3, 4, 5, 6, 7, 8, 9], [10, 11, 12, 13, 14, 15, 16, 17, 18, 19], [20, 21, 22, 23, 24, 25, 26, 27, 28, 29], [30, 31, 32, 33, 34, 35, 36, 37, 38, 39], [40, 41, 42, 43, 44, 45, 46, 47, 48, 49]]
>>>
>>> transposed = transpose(split)
>>> transposed
[[0, 10, 20, 30, 40], [1, 11, 21, 31, 41], [2, 12, 22, 32, 42], [3, 13, 23, 33, 43], [4, 14, 24, 34, 44], [5, 15, 25, 35, 45], [6, 16, 26, 36, 46], [7, 17, 27, 37, 47], [8, 18, 28, 38, 48], [9, 19, 29, 39, 49]]
>>>
>>> for i in transposed:
... print(('{:5d}' * len(transposed[0])).format(*i))
...
0 10 20 30 40
1 11 21 31 41
2 12 22 32 42
3 13 23 33 43
4 14 24 34 44
5 15 25 35 45
6 16 26 36 46
7 17 27 37 47
8 18 28 38 48
9 19 29 39 49
>>>