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import collections
from math import ceil
from django.core.paginator import Page
from django.core.cache import cache


# To use the paginator, add the following to your admin class:
# from myapp import CachingPaginator
#
# ...

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import sys
import random
from itertools import permutations

class RoundRobin(object):
    '''
    Usage:
        r = RoundRobin(['Bye','Nigel','Wellignton','Andrew','Sherwin','Chollapat','David','Craig'])
        r.fix_pairing('Nigel',5, 'Bye')
        r.fix_pairing( 'Craig',0,'Bye')

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Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm