Python - randomly partition a list into n nearly equal parts

Question

Hi,

I have read the answers to the Python: Slicing a list into n nearly-equal-length partitions question.

This is the accepted answer:

def partition(lst, n): 
    division = len(lst) / float(n) 
    return [ lst[int(round(division * i)): int(round(division * (i + 1)))] for i in xrange(n) ]

I am wondering, how does one modify these solutions in order to randomly assign items to a partition as opposed to incremental assignment.

Thanks, S :-)

Answer 1

Call random.shuffle() on the list before partitioning it.

Answer 2

shuffle input list.

Answer 3

First you randomize the list and then you split it in n nearly equal parts.