How do I set up Flask with Async SQLAlchemy?

How do I set up Flask with Async SQLAlchemy?

To set up Flask with Async SQLAlchemy, you'll need to install the necessary packages first. You can use pip to install Flask, SQLAlchemy, and async libraries like asyncpg for PostgreSQL.

What are the key steps after installing the packages?

After installing the packages, you need to configure your Flask app to use Async SQLAlchemy. This involves creating an async engine and session, and then defining your models.

Can you show me a basic example of the code?

Sure! Here's a simple example:

from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'postgresql+asyncpg://user:password@localhost/dbname'

db = SQLAlchemy(app)

# Define your models here

if __name__ == '__main__':
    app.run()

What about handling migrations?

For migrations, you can use Alembic with Async SQLAlchemy. You'll need to configure Alembic to work with your async engine.