python-dependency-injector/examples/providers/custom_factory.py
2015-11-23 21:46:21 +02:00

45 lines
981 B
Python

"""Custom `Factory` example."""
from dependency_injector import providers
class User(object):
"""Example class User."""
class UsersFactory(providers.Provider):
"""Example users factory."""
__slots__ = ('_factory',)
def __init__(self):
"""Initializer."""
self._factory = providers.Factory(User)
super(UsersFactory, self).__init__()
def _provide(self, *args, **kwargs):
"""Return provided instance.
:param args: tuple of context positional arguments
:type args: tuple[object]
:param kwargs: dictionary of context keyword arguments
:type kwargs: dict[str, object]
:rtype: object
"""
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