python asyncio/aiohttp sharing globals across project

I have an asyncio project. It has several modules. Many of them need access to a few globals, like: 1. aiohttp ClientSession() object, since according to aiohttp docs, I should avoid creating a new ClientSession for every request.
2. asyncio socket, i.e reader, writer which I create using asyncio.open_connection(). I want to maintain a persistent connection.
3. event loop, which I get using a asyncio.get_event_loop()

What is the best practice to share such variables?
I would like to create a globals.py module, which will define these variables.

The problem is that I can't use the async with syntax for the ClientSession object in the globals module.
For the socket, I must define it somehow in an async def, so I can't expose it at the module level.

And, testing wise - should every module define a global variable like:
loop = asyncio.get_event_loop()
Or, is it better to pass the event loop to the module, for example in the class __init__)?