Dependency ~~injection~~ injktion
Project description
Injkt (Dependency injection injktion)
Your simple python DI library built with good intentions.
Install
pip install injkt
Why?
Good question.
How?
import typing as ty
from injkt import Bind, Config, Injectable, Injktor, inject_args_deps
class IMailService(ty.Protocol):
def send_mail(self, subject: str, to: str) -> None:
...
class SmtpMailService(IMailService):
def send_mail(self, subject: str, to: str) -> None:
raise NotImplementedError()
injktor = Injktor(
Config(
{
Bind(IMailService, SmtpMailService),
}
)
)
@inject_args_deps
def business_logic(mail_service=Injectable(IMailService)):
mail_service.send_mail("Hello", "world")
business_logic()
Class Based
from injktor import inject_attr_deps
@inject_attr_deps
class BusinessLogic:
mail_service = Injectable(IMailService)
def do_business_logic(self) -> None:
self.mail_service.send_mail("Hello", "world")
BusinessLogic().do_business_logic()
Class based lazy injection
from injktor import InjktLazy
class BusinessLogic(InjktLazy):
mail_service = Injectable(IMailService)
def do_business_logic(self) -> None:
self.mail_service.send_mail("Hello", "world")
BusinessLogic().do_business_logic()
Re-init dependencies
injktor = Injktor(
Config(
{
Bind(IMailService, SmtpMailService, always_reinit=True),
}
)
)
Enabling always_reinit
will re-initialize the dependency on each call.
NOTE: It won't be re-initialized in the same class if you aren't using InjktLazy
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