Hi List, I'm currently trying to convince my company that asyncio is a great thing. After a lot of critique, the newest thing is, people complain: I cannot test my code on the command line! And indeed they are right, a simple a = yield from some_coroutine() is not possible on the command line, and doesn't make sense. Wait a minute, really? Well, it could make sense, in an asyncio-based command line. I am thinking about a python interpreter whose internal loop is something like @coroutine def commandline(): while True: cmd = yield from input_async() code = compile(cmd, "<stdin>", "generator") yield from exec(code) A new compile mode would allow to directly, always create a generator, and exec should be certainly be able to handle this. I think this would not only make people happy that want to test code on the command line, but also all those people developing command line-GUI combinations (IPython comes to mind), which have to keep several event loops in sync. Greetings Martin