from functools import lru_cache from typing import TYPE_CHECKING, Type if TYPE_CHECKING: from pydantic import BaseModel from pydantic.fields import FieldInfo @lru_cache(maxsize=None) def import_cached_base_model() -> Type['BaseModel']: from pydantic import BaseModel return BaseModel @lru_cache(maxsize=None) def import_cached_field_info() -> Type['FieldInfo']: from pydantic.fields import FieldInfo return FieldInfo