async using generator http://stackoverflow.com/questions/1696152/easy-python-async-precompiler #python

async.py

from threading import Thread
import hashlib

def async(gen):
    def func(*args, **kwargs):
        it = gen(*args, **kwargs)
        result = it.next()
        Thread(target=lambda: list(it)).start()
        return result
    return func

@async
def test(text):
    # synchronous part (empty in this example)
    yield # Use "yield value" if you need to return meaningful value
    # asynchronous part[s]
    digest = hashlib.md5(text).hexdigest()
    print digest