@asyncio.coroutine vs async def

Question

With the asyncio library I\'ve seen,

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

and

async def function():
             


        

Answer 1

From Python 3.5 coroutines formally became a distinct type and thus the async def syntax, along with await statements.

Prior to that, Python 3.4 created coroutines by wrapping regular functions into generators, hence the decorator syntax, and the more generator-like yield from.