peewee-async

Asynchronous interface for peewee ORM powered by asyncio.

Important notes

• Since version 0.6.0a only peewee 3.5+ is supported
• If you still need Python 3.4 support use older versions, i.e. pip install peewee-async==0.5.12

Version 0.6.0a is published as pre-release, mind the "a" in version identifier. That means in order to install it you should specify --pre flag for pip.

Overview

• Requires Python 3.5+
• Has support for PostgreSQL via aiopg
• Has support for MySQL via aiomysql
• Single point for high-level async API
• Drop-in replacement for sync code, sync will remain sync
• Basic operations are supported
• Transactions support is present, yet not heavily tested

The complete documentation:
http://peewee-async.readthedocs.io

Install

Install with pip for PostgreSQL:

pip install --pre peewee-async; pip install aiopg

or for MySQL:

pip install --pre peewee-async; pip install aiomysql

Quickstart

Create 'test' PostgreSQL database for running this snippet:

createdb -E utf-8 test

The code below is using new Python 3.5 async / await syntax, but older yield from will also work!

import asyncio
import peewee
import peewee_async

# Nothing special, just define model and database:

database = peewee_async.PostgresqlDatabase(
    database='db_name',
    user='user',
    host='127.0.0.1',
    port='5432',
    password='password'
)

class TestModel(peewee.Model):
    text = peewee.CharField()

    class Meta:
        database = database

# Look, sync code is working!

TestModel.create_table(True)
TestModel.create(text="Yo, I can do it sync!")
database.close()

# Create async models manager:

objects = peewee_async.Manager(database)

# No need for sync anymore!

database.set_allow_sync(False)

async def handler():
    await objects.create(TestModel, text="Not bad. Watch this, I'm async!")
    all_objects = await objects.execute(TestModel.select())
    for obj in all_objects:
        print(obj.text)

loop = asyncio.get_event_loop()
loop.run_until_complete(handler())
loop.close()

# Clean up, can do it sync again:
with objects.allow_sync():
    TestModel.drop_table(True)

# Expected output:
# Yo, I can do it sync!
# Not bad. Watch this, I'm async!

Documentation

http://peewee-async.readthedocs.io

Discuss

You are welcome to add discussion topics or bug reports to tracker on GitHub: https://github.com/05bit/peewee-async/issues

License

Copyright (c) 2014, Alexey Kinev [email protected]

Licensed under The MIT License (MIT), see LICENSE file for more details.