python-dependency-injector/examples/providers/provided_instance.py
2020-08-20 20:56:48 -04:00

38 lines
829 B
Python

"""Example of the injecting of provided instance attributes and items."""
from dependency_injector import providers
class Service:
def __init__(self):
self.value = 'foo'
self.values = [self.value]
def get_value(self):
return self.value
def __getitem__(self, item):
return self.values[item]
class Client:
def __init__(self, value1, value2, value3):
self.value1 = value1
self.value2 = value2
self.value3 = value3
service = providers.Singleton(Service)
client_factory = providers.Factory(
Client,
value1=service.provided.value,
value2=service.provided.values[0],
value3=service.provided.get_value.call(),
)
if __name__ == '__main__':
client = client_factory()
assert client.value1 == client.value2 == client.value3 == 'foo'