aiomysql 0.0.14

Documentation

https://aiomysql.readthedocs.io/

Mailing List

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

Basic Example

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

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

import asyncio
from aiomysql import create_pool


loop = asyncio.get_event_loop()

async def go():
    async with create_pool(host='127.0.0.1', port=3306,
                           user='root', password='',
                           db='mysql', loop=loop) as pool:
        async with pool.get() as conn:
            async with conn.cursor() as cur:
                await cur.execute("SELECT 42;")
                value = await cur.fetchone()
                print(value)


loop.run_until_complete(go())

Connection Pool

Connection pooling ported from aiopg :

import asyncio
import aiomysql


async def test_example(loop):
    pool = await aiomysql.create_pool(host='127.0.0.1', port=3306,
                                      user='root', password='',
                                      db='mysql', loop=loop)
    async with pool.acquire() as conn:
        async with conn.cursor() as cur:
            await cur.execute("SELECT 42;")
            print(cur.description)
            (r,) = await cur.fetchone()
            assert r == 42
    pool.close()
    await pool.wait_closed()


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

Example of SQLAlchemy optional integration

Sqlalchemy support has been ported from aiopg so api should be very familiar for aiopg user.:

import asyncio
import sqlalchemy as sa

from aiomysql.sa import create_engine


metadata = sa.MetaData()

tbl = sa.Table('tbl', metadata,
               sa.Column('id', sa.Integer, primary_key=True),
               sa.Column('val', sa.String(255)))


async def go(loop):
    engine = await create_engine(user='root', db='test_pymysql',
                                 host='127.0.0.1', password='', loop=loop)
    async with engine.acquire() as conn:
        await conn.execute(tbl.insert().values(val='abc'))
        await conn.execute(tbl.insert().values(val='xyz'))

        async for row in conn.execute(tbl.select()):
            print(row.id, row.val)

    engine.close()
    await engine.wait_closed()


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

Requirements

• Python 3.3+

• asyncio or Python 3.4+

• PyMySQL

Changes