Documentation

The project documentation can be found here.

Performance

In our testing asyncpg is, on average, 3x faster than psycopg2 (and its asyncio variant – aiopg).

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

Features

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

Installation

asyncpg is available on PyPI and has no dependencies. Use pip to install:

$ pip install asyncpg

Basic Usage

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())

License

asyncpg is developed and distributed under the Apache 2.0 license.