Non-blocking I/O with asyncio

Question

I\'m trying to write a networked game with Pygame and asyncio, but I can\'t work out how to avoid hanging on reads. Here is my code for the client:

@asyncio.coro         


        

Answer 1

You can "transform" a blocking task into a non-blocking one.

I suggest this: https://docs.python.org/3/library/asyncio-eventloop.html#executor.

I have a function that listens to a twitter feed, function "mention", and I run it in an executor, so if it hangs, it doesn't block the other tasks.

@asyncio.coroutine
def boucle_deux():
#faire attendre la boucle si pas bcp de mots
    while True:
        print("debut du deux")
        value = t.next()
        future2 = loop.run_in_executor(None, mention, "LQNyL2xvt9OQMvje7jryaHkN8",
                                       "IRJX6S17K44t8oiVGCjrj6XCVKqGSX9ClfpGpfC467rajqePGb",
                                       "2693346740-km3Ufby8r9BbYpyzcqwiHhss22h4YkmnPN4LnLM",
                                       "53R8GAAncFJ1aHA1yJe1OICfjqUbqwcMR38wSqvbzsQMB", 23, value)
        response2 = yield from future2
        yield from asyncio.sleep(5)
        print("fin du deux")

asyncio.Task(boucle_deux())