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https://github.com/ets-labs/python-dependency-injector.git
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daca85d555
* Fix a statement about coupling and cohesion that is not always true https://enterprisecraftsmanship.com/posts/cohesion-coupling-difference/#_types_of_code_from_a_cohesion_and_coupling_perspective * Fix a typing issue in an example `ApiClient` expects timeout to be an integer (based on a type hint), but `os.getenv` returns a string when `TIMEOUT` is set. * Specify the `None` return type where it is missed * Fix typing issues in some other places * Edit a statement about coupling and cohesion Co-authored-by: Roman Mogylatov <rmogilatov@gmail.com> Co-authored-by: Roman Mogylatov <rmogilatov@gmail.com>
40 lines
974 B
Python
40 lines
974 B
Python
from unittest import mock
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from dependency_injector import containers, providers
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from dependency_injector.wiring import Provide, inject
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from after import ApiClient, Service
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class Container(containers.DeclarativeContainer):
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config = providers.Configuration()
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api_client = providers.Singleton(
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ApiClient,
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api_key=config.api_key,
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timeout=config.timeout,
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)
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service = providers.Factory(
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Service,
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api_client=api_client,
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)
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@inject
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def main(service: Service = Provide[Container.service]) -> None:
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...
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if __name__ == "__main__":
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container = Container()
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container.config.api_key.from_env("API_KEY", required=True)
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container.config.timeout.from_env("TIMEOUT", as_=int, default=5)
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container.wire(modules=[__name__])
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main() # <-- dependency is injected automatically
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with container.api_client.override(mock.Mock()):
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main() # <-- overridden dependency is injected automatically
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