How do I use SQLAlchemy with async in Python?

How do I use SQLAlchemy with async in Python?

To use SQLAlchemy asynchronously, you need to use the asyncio library along with the asyncpg driver for PostgreSQL. First, install the necessary packages.

What packages do I need to install?

You need to install SQLAlchemy, asyncpg, and asyncio. You can do this using pip: pip install sqlalchemy asyncpg.

Can you show me a simple example?

Sure! Here's a basic example:

import asyncio
from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession
from sqlalchemy.orm import sessionmaker

DATABASE_URL = 'postgresql+asyncpg://user:password@localhost/dbname'

engine = create_async_engine(DATABASE_URL, echo=True)
AsyncSessionLocal = sessionmaker(bind=engine, class_=AsyncSession)

async def main():
    async with AsyncSessionLocal() as session:
        # Your async database operations here
        pass

asyncio.run(main())