In [19]: %cpaste
Pasting code; enter '--' alone on the line to stop or use Ctrl-D.
:A = [12, 73, 2876, 2755, 28, 9, 127, 847, 25, 551, 37, 898, 14, 29]
:
:cur_buf  = 0
:for i in [0, 1, 2, 3, 4]:
:       for j in xrange(len(A)):
:               if A[j] % 5 == i:
:                       A[j], A[cur_buf] = A[cur_buf], A[j]
:                       cur_buf += 1
:
:print A
:print map(lambda x: x % 5, A)
:--
[2755, 25, 2876, 551, 127, 847, 12, 37, 73, 28, 898, 9, 14, 29]
[0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4]