Skip to main content

ODBC driver for asyncio.

Project description

https://travis-ci.org/aio-libs/aioodbc.svg?branch=master https://coveralls.io/repos/aio-libs/aioodbc/badge.svg?branch=master&service=github

aioodbc is Python 3.5+ module that makes possible accessing ODBC databases with asyncio. It is rely on awesome pyodbc library, preserve same look and feel. aioodbc was written async/await syntax (PEP492) thus not compatible with Python older then 3.5. Internally aioodbc employ threads to avoid blocking the event loop, btw threads are not that bad as you think :)

Supported Databases

aioodbc should work with all databases supported by pyodbc. But for now library have been tested with: SQLite, MySQL and PostgreSQL. Feel free to add other databases to the test suite by submitting PR.

Mailing List

https://groups.google.com/forum/#!forum/aio-libs

Basic Example

aioodbc based on pyodbc , and provides same api, you just need to use yield from conn.f() or await conn.f() instead of just call conn.f() for every method.

Properties are unchanged, so conn.prop is correct as well as conn.prop = val.

import asyncio
import aioodbc


loop = asyncio.get_event_loop()


async def test_example():
    dsn = 'Driver=SQLite;Database=sqlite.db'
    conn = await aioodbc.connect(dsn=dsn, loop=loop)

    cur = await conn.cursor()
    await cur.execute("SELECT 42;")
    r = await cur.fetchall()
    print(r)
    await cur.close()
    await conn.close()

loop.run_until_complete(test_example())

Connection Pool

Connection pooling ported from aiopg and rely on PEP492 features:

import asyncio
import aioodbc


loop = asyncio.get_event_loop()


async def test_pool():
    dsn = 'Driver=SQLite;Database=sqlite.db'
    pool = await aioodbc.create_pool(dsn=dsn, loop=loop)

    async with pool.acquire() as conn:
        cur = await conn.cursor()
        await cur.execute("SELECT 42;")
        r = await cur.fetchall()
        print(r)
        await cur.close()
        await conn.close()
    pool.close()
    await pool.wait_closed()

loop.run_until_complete(test_example())

Context Managers

Pool, Connection and Cursor objects support context manager protocol:

import asyncio
import aioodbc


loop = asyncio.get_event_loop()


async def test_example():
    dsn = 'Driver=SQLite;Database=sqlite.db'

    async with aioodbc.create_pool(dsn=dsn, loop=loop) as pool:
        async with pool.acquire() as conn:
            async with conn.cursor() as cur:
                await cur.execute('SELECT 42;')
                val = await cur.fetchone()
                print(val)

loop.run_until_complete(test_example())

Installation

pip install aioodbc

In Linux environment pyodbc (hence aioodbc) requires unixODBC library. You can install it using package manager from your OS distribution:

$ sudo apt-get install unixodbc
$ sudo apt-get install unixodbc-dev

Other SQL Drivers

  • aiopg - asyncio client for PostgreSQL

  • aiomysql - asyncio client form MySQL

Requirements

Changes

0.0.2 (2016-01-01)

  • Improved pep 492 support.

  • pool.get method removed, use acquire instead.

  • Added tests against MySQL.

  • Added bunch of doc strings.

0.0.1 (2015-10-12)

  • Initial release.

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

aioodbc-0.0.2.tar.gz (21.0 kB view hashes)

Uploaded Source

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page