python asyncio add_done_callback with async def : <p>I have 2 functions: The first one, <code>def_a</code>, is an asynchronous function and the second one is <code>def_b</code> which is a regular function and called with the result of <code>def_a</code> as a callback with the <code>add_done_callback</code> function.</p>

<p>My code looks like this:</p>

<pre><code>import asyncio

def def_b(result):
    next_number = result.result()
    # some work on the next_number
    print(next_number + 1)

async def def_a(number):
    await some_async_work(number)
    return number + 1

loop = asyncio.get_event_loop()
task = asyncio.ensure_future(def_a(1))
task.add_done_callback(def_b)
response = loop.run_until_complete(task)
loop.close()
</code></pre>

<p>And it's work perfectly.</p>

<p>The problem began when also the second function, <code>def_b</code>, became asynchronous. Now it looks like this:</p>

<pre><code>async def def_b(result):
    next_number = result.result()
    # some asynchronous work on the next_number
    print(next_number + 1)
</code></pre>

<p>But now I can not provide it to the <code>add_done_callback</code> function, because it's not a regular function.</p>

<p>My question is- Is it possible and how can I provide <code>def_b</code> to the <code>add_done_callback</code> function if <code>def_b</code> is asynchronous?</p>
