There is relatively new Python 3 aiohttp library that contains client/server. Does it contain ORM? If not - is it possible to use it with 3-rd party ORM? If not possible - for which purpose it could be used? I don't mean that app could not be written without ORM, but major waste of Python Frameworks support it and developers are used to such style of programming.
Short answer -- aiohttp has no ORM yet.
You can use SQLAlchemy-like queries for aiopg driver, see example
The same is available for aiomysql.
The support is not full-fledged Object-Relational Mapping but only helpers for making SQL queries easier.
Update in 2018: there is GINO now, built on top of SQLAlchemy core and asyncpg for asyncio.
来源：https://stackoverflow.com/questions/32572544/does-aiohttp-have-orm