Attempt to make a nice Tortoise BaseModel to work with FastAPI

base.py

from typing import (
    Type,
    Optional,
)

from tortoise.models import Model
from tortoise.contrib.pydantic import (
    pydantic_model_creator,
    PydanticModel,
)


class pydantic:
    def __init__(self, *args, **kwargs):
        self.args = args
        self.kwargs = kwargs
        self.pydantic_model = None

    def __set_name__(self, owner, name):
        self.owner = owner
        self.name = name

    def __get__(self, instance: Optional[Model], typevar: Type[Model]) -> Type[PydanticModel]:
        if instance is None:
            if self.pydantic_model is None:
                self.pydantic_model = pydantic_model_creator(
                    self.owner.__class__,
                    *self.args,
                    name=self.owner.__name__ + self.name.title(),
                    **self.kwargs
                )
            return self.pydantic_model
        return self.pydantic_model

class BaseModel(Model):
    All = pydantic()
    Write = pydantic(exclude_readonly=True)

    async def pydantic(self):
        # TODO: get a type constraing on this
        return await self.All.from_tortoise_orm(self)