polls/controllers/test_document/app/main.py

from fastapi import FastAPI
from fastapi.responses import JSONResponse
from fastapi.requests import Request
from fastapi.security.utils import get_authorization_scheme
from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession
from sqlalchemy.orm import sessionmaker
from app.models import Base
from app.routers import users, teams

app = FastAPI()

engine = create_async_engine("sqlite:///database.db")
async_session = sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)

@app.on_event("startup")
async def startup():
    async with engine.begin() as conn:
        await conn.run_sync(Base.metadata.create_all)

@app.on_event("shutdown")
async def shutdown():
    await engine.dispose()