Fastapi Tutorial: Pdf

@app.get("/secure-data", response_model=ResponseModel) async def secure_endpoint(): return {"status": "ok", "data": {"secret": "value"}}

@app.get("/users/") async def read_users(commons: dict = Depends(common_parameters)): return commons from sqlalchemy.orm import Session def get_db(): db = SessionLocal() try: yield db finally: db.close() fastapi tutorial pdf

@app.get("/items/") async def list_items(skip: int = 0, limit: int = 10): return {"skip": skip, "limit": limit} Request: /items/?skip=5&limit=20 – FastAPI maps skip=5 and limit=20 . For sending complex data (e.g., JSON), use Pydantic models. fastapi tutorial pdf

def test_read_root(): response = client.get("/") assert response.status_code == 200 assert response.json() == {"message": "Hello World"} fastapi tutorial pdf

from fastapi import BackgroundTasks def write_log(message: str): with open("log.txt", "a") as f: f.write(f"{message}\n")

python -m venv fastapi-env source fastapi-env/bin/activate # On Windows: fastapi-env\Scripts\activate pip install fastapi uvicorn Create a file named main.py :

@app.get("/users/{user_id}") def get_user(user_id: int, db: Session = Depends(get_db)): return db.query(User).filter(User.id == user_id).first()