denhartog

from itertools import zip_longest, islice

def grouper(iterable, n):
    return zip(*[iter(iterable)] * n)

def grouper_longest(iterable, n, fillvalue=None):
    return zip_longest(*[iter(iterable)] * n, fillvalue=fillvalue)

i0 = []
i1 = [1]

denhartog

#https://github.com/faif/python-patterns
Facade  # https://github.com/faif/python-patterns/blob/master/facade.py

Factory Method  # https://github.com/faif/python-patterns/blob/master/factory_method.py

MVC  # https://github.com/faif/python-patterns/blob/master/mvc.py
Tier  # https://github.com/faif/python-patterns/blob/master/3-tier.py

Publish/Subscribe  # https://github.com/faif/python-patterns/blob/master/publish_subscribe.py