import asyncio
import aiomysql


loop = asyncio.get_event_loop()


@asyncio.coroutine
def test_example():
    conn = yield from aiomysql.connect(
        host='127.0.0.1',
        port=3306,
        user='root',
        password='',
        db='mysql',
        loop=loop
    )

    cur = yield from conn.cursor()
    yield from cur.execute("SELECT Host,User FROM user")
    print(cur.description)
    r = yield from cur.fetchall()
    print(r)
    yield from cur.close()
    conn.close()


loop.run_until_complete(test_example())