Best way to split a list into randomly sized chunks?

Question

I have a list of numbers such as

[5000, 5000, 5000, 5000, 5000, 5000]

I need to create a function that turns that list into a list of randomly sized smaller lists, such as :

[[5000, 5000], [5000, 5000, 5000], [5000]]

What's the best way to do this in python?

Answer 1

from itertools import islice
from random import randint

def random_chunk(li, min_chunk=1, max_chunk=3):
    it = iter(li)
    while True:
        nxt = list(islice(it,randint(min_chunk,max_chunk)))
        if nxt:
            yield nxt
        else:
            break

demo:

li = [5000, 5000, 5000, 5000, 5000, 5000]

list(random_chunk(li))
Out[45]: [[5000, 5000, 5000], [5000], [5000, 5000]]

This results in a (ignoring the last chunk) uniform distribution of chunk sizes between min_chunk and max_chunk, inclusively.