jaakko
2d470ee418
Lisätty SQLAlchemy 2.0, Pydantic v2, FastAPI ja Python deprecated → modern patterniparit. Uusimmat dokumentaatiot tarkistettu 2026-04-14.
1.6 KiB
DEPRECATED PATTERNS — do NOT generate these. Use the modern alternative.
SQLAlchemy: ✗ from sqlalchemy.ext.declarative import declarative_base → ✓ from sqlalchemy.orm import DeclarativeBase ✗ Base = declarative_base() → ✓ class Base(DeclarativeBase): pass ✗ Column(Integer, primary_key=True) → ✓ Mapped[int] = mapped_column(primary_key=True) ✗ Column(String(255)) → ✓ Mapped[str] = mapped_column(String(255)) ✗ session.query(User).filter_by(name="x").all() → ✓ session.execute(select(User).filter_by(name="x")).scalars().all() ✗ session.query(User).get(5) → ✓ session.get(User, 5) ✗ MetaData(bind=engine) → ✓ metadata.create_all(engine)
Pydantic: ✗ class Config: orm_mode = True → ✓ model_config = ConfigDict(from_attributes=True) ✗ .dict() → ✓ .model_dump() ✗ .json() → ✓ .model_dump_json() ✗ parse_obj() → ✓ model_validate() ✗ @validator → ✓ @field_validator ✗ @root_validator → ✓ @model_validator ✗ Optional[str] (auto-None in v1) → ✓ str | None = None (explicit default in v2) ✗ ConstrainedInt → ✓ Annotated[int, Field(ge=0)]
FastAPI: ✗ status_code=201 → ✓ status_code=status.HTTP_201_CREATED (readable) ✗ Manual exception strings → ✓ HTTPException(status_code=404, detail="Not found") ✗ .dict() in handlers → ✓ .model_dump() (Pydantic v2)
Python: ✗ Optional[str] → ✓ str | None (PEP 604, Python 3.10+) ✗ List[str] → ✓ list[str] (PEP 585, Python 3.9+) ✗ Dict[str, int] → ✓ dict[str, int] ✗ Tuple[int, ...] → ✓ tuple[int, ...]