>>> from bags import bags

>>> bagslst = [('Nile', 0, 1), ('Albion', 0, 0), ('BR18', 1, 1),
... ('Nicola', 2, 1), ('Dahlia',1, 0), ('Retro', 0, 0), ('MonSac', 2, 1),
... ('Eli', 2, 1), ('DotCom', 0, 1), ('Estivo', 1, 1)]
>>> d = bags(bagslst)
>>> if d != {(0, 1): ['Nile', 'DotCom'], (1, 0): ['Dahlia'],
...   (1, 1): ['BR18', 'Estivo'], (2, 1): ['Nicola', 'MonSac', 'Eli']}:
...    print(d)