MYATAKZ

class DB:

    def __init__(self, config: dict):
        self.config = config
        self._pool = None


    async def get_pool(self):
        return self._pool

    async def create_pool(self):
        self._pool = await asyncpg.create_pool(**self.config)

    async def select(self):
        async with self._pool.acquire() as conn:
            print(await conn.fetch('''SELECT * FROM names'''))


async def select(pool):
    async with pool.acquire() as conn:
        print(await conn.fetch('''SELECT * FROM names'''))


db = DB(data)


async def main():
    await db.create_pool()
    await db.select()

    pool = await db.get_pool()

    await select(pool)


asyncio.run(main())