How to use async/await in Python 3.5?

Question

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import time

async def foo():
  await time.sleep(1)

foo()

I couldn\'t make this dead simple example

Answer 1

If you already have a loop running (with some other tasks), you can add new tasks with:

asyncio.ensure_future(foo())

otherwise you might get

The event loop is already running

error.