python-dependency-injector/examples/providers/factory_init_injections.py

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2016-06-08 13:39:53 +00:00
"""`Factory` providers init injections example."""
import collections
import dependency_injector.providers as providers
CreditCard = collections.namedtuple('CreditCard', [])
Photo = collections.namedtuple('Photo', [])
User = collections.namedtuple('User', ['uid', 'main_photo', 'credit_card'])
# User, Photo and CreditCard factories:
credit_cards_factory = providers.Factory(CreditCard)
photos_factory = providers.Factory(Photo)
users_factory = providers.Factory(User,
main_photo=photos_factory,
credit_card=credit_cards_factory)
# Creating several User objects:
user1 = users_factory(1)
# Same as: user1 = User(1,
# main_photo=Photo(),
# credit_card=CreditCard())
user2 = users_factory(2)
# Same as: user2 = User(2,
# main_photo=Photo(),
# credit_card=CreditCard())
# Context keyword arguments have priority on keyword argument injections:
main_photo = Photo()
credit_card = CreditCard()
user3 = users_factory(3,
main_photo=main_photo,
credit_card=credit_card)
# Same as: user3 = User(3,
# main_photo=main_photo,
# credit_card=credit_card)