How would I run a while loop on a separate thread in Python?

Question

I'm new to coroutines in python but I know in lua you would do this to create one

coroutine.wrap(function()
 while true do
 end
end)()

But I dont know how I would do this python.

I tried using this code which included a function from the slp_coroutine library which didnt work

import slp_coroutine
def test():
    while True:
        print("hi")
        time.sleep(3)

r = slp_coroutine.await_coroutine(test())

and I also tried this and it also didnt work.

async def test():
    while True:
        print("hi")
        await asyncio.sleep(3)

asyncio.run(test())