Getting values from functions that run as asyncio tasks

Question

I was trying the following code:

import asyncio

@asyncio.coroutine
def func_normal():
        print(\"A\")
        yield from asyncio.sleep(5)
        print(\"B         


        

Answer 1

loop.run_until_complete returns the value returned by the function you pass into it. So, it will return the output of asyncio.wait:

import asyncio

@asyncio.coroutine
def func_normal():
    print("A")
    yield from asyncio.sleep(5)
    print("B")
    return 'saad'

@asyncio.coroutine
def func_infinite():
    i = 0
    while i<10:
        print("--"+str(i))
        i = i+1
    return('saad2')

loop = asyncio.get_event_loop()

tasks = [
    asyncio.async(func_normal()),
    asyncio.async(func_infinite())]

done, _ = loop.run_until_complete(asyncio.wait(tasks))
for fut in done:
    print("return value is {}".format(fut.result()))
loop.close()

Output:

A
--0
--1
--2
--3
--4
--5
--6
--7
--8
--9
B
return value is saad2
return value is saad

You can also access the results directly from the tasks array:

print(tasks[0].result())
print(tasks[1].result())