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

47 lines
1.1 KiB
Python

"""Complex example of the injecting of provided instance attributes and items."""
from dependency_injector import containers, providers
class Service:
def __init__(self, value):
self.value = value
def get_value(self):
return self.value
class Container(containers.DeclarativeContainer):
service = providers.Singleton(Service, value=42)
dependency = providers.Object(
{
'foo': {
'bar': 10,
'baz': lambda arg: {'arg': arg}
},
},
)
demo_list = providers.List(
dependency.provided['foo']['bar'],
dependency.provided['foo']['baz'].call(22)['arg'],
dependency.provided['foo']['baz'].call(service)['arg'],
dependency.provided['foo']['baz'].call(service)['arg'].value,
dependency.provided['foo']['baz'].call(service)['arg'].get_value.call(),
)
if __name__ == '__main__':
container = Container()
assert container.demo_list() == [
10,
22,
container.service(),
42,
42,
]