Python ?? 3.5?? ??? ? ?? ?? ??? ???? ??? ??? ?? ??? ? ??? '?? ??'? ???????.

?? ??? ? ??????

Java, C ? ?? ????? ??? ??(DI - dependency Inversion)? ??? ????? ?? ????? ???? ?????.

??? ??? ?? ????? ???? ?? ??? ???? ?? ???? ???? ??? ????. ???(????? ?? ?? ???)? ????? ???? ???? ?????.

?? ?:

class GasStation:
    def fill_tank(car, amount):
        car.fill(amount)

? ??? ?????? ???? ??? ? ? ????. ?????? fill_tank ???? ??? ??? ???? ?? ?? ??? ? ??? ??? ????? ?????.

?? ?:

from typing import Protocol

class Vehicle(Protocol):
    def fill(amount: int) -> None:
        ...
class GasStation:
    def fill_tank(vehicle: Vehicle, amount: int) -> None:
        vehicle.fill(amount)

? ???? ?? ?? ??? Vehicle? ?????(typing.Protocol ??). GasStation? fill_tank ??? ? ?? ?? ??? ???? ???? ?? Vehicle ?????? ????? ?? ????? fill ???? ???? ?? ??? ??? ??? ? ????.

PyDIT? ??????

Python? ?? ?? ???? ???? PyDIT(Python ??? ?? with ??)?? ??? ?? ??? ????? ?????? ??????.

??? ???? ???? ?? ?????? ?????? ????? ??? ?????. PostgreSQL, MySQL, OracleDB, ???? ?????? ?? NoSQL ??????? ???? ?????? ?? ???? ???? ??? ??, ?? ? ?? ??? ???? ???. .

from time import sleep
from typing import TypedDict
from typing_extensions import override
from uuid import UUID
from src.configs.di import pydit
from src.adapters.repositories.interfaces.user import UserRepository
from src.constants.injection import MEMORY_REPOSITORY_CONFIG_TOKEN
from src.domain.user.models.user import UserModel


class ConfigType(TypedDict):
    delay: int


class MemoryUserRepository(UserRepository):

    __users: dict[UUID, UserModel] = {}

    def __init__(self):
        self.__delay = self.config.get("delay", 0.2)

    @pydit.inject(token=MEMORY_REPOSITORY_CONFIG_TOKEN)
    def config(self) -> ConfigType:  # TODO: supress return type error
        pass

    @override
    def get_by_id(self, *, id_: UUID) -> UserModel:
        sleep(self.__delay)

        user = self.__users.get(id_)

        if user is None:
            raise ValueError("User not found")

        return user

    @override
    def save(self, *, data: UserModel) -> None:
        sleep(self.__delay)
        self._check_pk_conflict(pk=data.id)

        self.__users[data.id] = data

    @override
    def list_(self) -> list[UserModel]:
        return list(self.__users.values())

    def _check_pk_conflict(self, *, pk: UUID) -> None:
        if pk not in self.__users:
            return

        raise ValueError("Primary key conflicts: DB alrady has a user with this ID")

??? ?????? ??? ?? ??? ??? ????? ?? ?????? ???? ??? ?? ?????? ?????.

from abc import abstractmethod
from typing import Protocol
from uuid import UUID
from src.domain.user.models.user import UserModel


class UserRepository(Protocol):
    @abstractmethod
    def get_by_id(self, *, id_: UUID) -> UserModel:
        pass

    @abstractmethod
    def save(self, *, data: UserModel) -> None:
        pass

    @abstractmethod
    def list_(self) -> list[UserModel]:
        pass

???? ??? ?? ???? ??????.

from src.adapters.repositories.in_memory.user import MemoryUserRepository
from src.constants.injection import MEMORY_REPOSITORY_CONFIG_TOKEN
from .di import pydit
from .get_db_config import get_db_config


def setup_dependencies():
    pydit.add_dependency(get_db_config, token=MEMORY_REPOSITORY_CONFIG_TOKEN)
    pydit.add_dependency(MemoryUserRepository, "UserRepository")

????? ???? ???? ??? ???? ?????.

from typing import cast
from src.adapters.repositories.interfaces.user import UserRepository
from src.configs.di import pydit
from src.domain.user.models.create_user import CreateUserModel
from src.domain.user.models.user import UserModel
from src.domain.user.services.create import CreateUserService
from src.domain.user.services.list import ListUsersService


class UserModule:
    @pydit.inject()
    def user_repository(self) -> UserRepository:
        return cast(UserRepository, None)

    def create(self, data: CreateUserModel) -> None:
        CreateUserService(self.user_repository).execute(data)

    def list_(self) -> list[UserModel]:
        return ListUsersService().execute()

???? ???? ???? self ?? module.user_repository ? ?? ???? ? ????.

? ?? ????? PyDIT? ??? ???? ??, ?? ??? ? SOLID ?? ????? ??? ? ????. ??? ???? ??? ??? ?????!

?? ???: Github
LinkedIn: Marcelo Almeida(MrM4rc)
PyPI: python-pydit

? ??? Python?? ???? ??? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!