python asynchronous context manager

Question

In Python Lan Ref. 3.4.4, it is said that __aenter__() and __aexit__() must return awaitables. However, in the example async context manager, these

Answer 1

Your __aenter__ method must return a context.

class MyAsyncContextManager:
    async def __aenter__(self):
        await log('entering context')
        # maybe some setup (e.g. await self.setup())
        return self

    async def __aexit__(self, exc_type, exc, tb):
        # maybe closing context (e.g. await self.close())
        await log('exiting context')

    async def do_something(self):
        await log('doing something')

usage:

async with MyAsyncContextManager() as context:
    await context.do_something()