Python dependency injection library
Project description
Python Dependency Injection Library
Usage
- Add injection policy
from pythondi import Provider, configure
class DI:
def __init__(self):
self.provider = Provider()
def bind_to_provider(self) -> None:
# Inject `Impl` class to `Interface` class
self.provider.bind(Repo, SQLRepo)
def bind_and_configure(self) -> None:
# Binding provider
self.bind_to_provider()
# Configure injector
configure(provider=self.provider)
# Configure injector after clear provider
configure_after_clear(provider=self.provider)
if __name__ == '__main__':
di = DI()
di.bind_and_configure()
- Import inject
from pythondi import inject
- Add type annotations that you want to inject dependencies
class Usecase:
def __init__(self, repo: Repo):
self.repo = repo
- Add decorator
class Usecase:
@inject()
def __init__(self, repo: Repo):
self.repo = repo
- Initialize class with no arguments
usecase = Usecase()
Or, you can also inject manually through decorator arguments
class Usecase:
@inject(repo=SQLRepo)
def __init__(self, repo):
self.repo = repo
In this case, do not have to configure providers and type annotation.
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