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

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"""Custom `Factory` example."""
from objects.providers import Provider
from objects.providers import Factory
class User(object):
"""Example class User."""
class UsersFactory(Provider):
"""Example users factory."""
__slots__ = ('_factory',)
def __init__(self):
"""Initializer."""
self._factory = Factory(User)
super(UsersFactory, self).__init__()
def _provide(self, *args, **kwargs):
"""Return provided instance."""
return self._factory(*args, **kwargs)
# Users factory:
users_factory = UsersFactory()
# Creating several User objects:
user1 = users_factory()
user2 = users_factory()
# Making some asserts:
assert isinstance(user1, User)
assert isinstance(user2, User)
assert user1 is not user2