import asyncio
import aiopg
import aiopg.sa
import asyncpg
import asyncpgsa
import sqlalchemy as sa

pg_tables = sa.Table(
            'pg_tables', sa.MetaData(),
            sa.Column('schemaname'),
            sa.Column('tablename'),
            sa.Column('tableowner'),
            sa.Column('tablespace'),
            sa.Column('hasindexes')
)
query = pg_tables.select().where(pg_tables.c.schemaname == 'pg_catalog')

loop = asyncio.get_event_loop()


async def aio_coro():
    await connection.execute(query)

async def apg_coro():
    await pgconn.execute(query)

run_aiopg = lambda: loop.run_until_complete(aio_coro())
run_asyncpgsa = lambda: loop.run_until_complete(apg_coro())

pgconn = asyncpg.connect(user='postgres', host='127.0.0.1', password='password', database='postgres', connection_class=asyncpgsa.connection.SAConnection)
pgconn = loop.run_until_complete(pgconn)
engine = loop.run_until_complete(aiopg.sa.create_engine(user='postgres', password='password', host='127.0.0.1', database='postgres'))
connection = loop.run_until_complete(engine.acquire())

run_asyncpgsa()
run_aiopg()


from timeit import timeit

print('aiopg.sa:', timeit(run_aiopg, number=10000))
print('asyncpgsa', timeit(run_asyncpgsa, number=10000))