asyncpg is a database interface library designed specifically for PostgreSQL and Python/asyncio. asyncpg is an efficient, clean implementation of PostgreSQL server binary protocol for use with Python's asyncio framework.

The project documentation can be found here.

In our testing asyncpg is, on average, 2x faster than psycopg2 (and its asyncio variant -- aiopg).

The above results are a geometric mean of benchmarks obtained with PostgreSQL client driver benchmarking toolbench available here.

asyncpg implements PostgreSQL server protocol natively and exposes its features directly, as opposed to hiding them behind a generic facade like DB-API.

This enables asyncpg to have easy-to-use support for:

• prepared statements
• scrollable cursors
• partial iteration on query results
• automatic encoding and decoding of composite types, arrays, and any combination of those
• straightforward support for custom data types

asyncpg requires Python 3.5 and is available on PyPI. Use pip to install it:

$ pip install asyncpg

import asyncio
import asyncpg

async def run():
    conn = await asyncpg.connect(user='user', password='password',
                                 database='database', host='127.0.0.1')
    values = await conn.fetch('''SELECT * FROM mytable''')
    await conn.close()

loop = asyncio.get_event_loop()
loop.run_until_complete(run())

asyncpg is developed and distributed under the Apache 2.0 license.