@asyncio.coroutine vs async def

Question

With the asyncio library I\'ve seen,

@asyncio.coroutine
def function():
    ...

and

async def function():
             


        

Answer 1

async def is a new syntax from Python 3.5. You could use await, async with and async for inside async defs.

@coroutine is a functional analogue for async def but it works in Python 3.4+ and utilizes yield from construction instead of await.

For practical perspective just never use @coroutine if your Python is 3.5+.