Change _async to base_async

docs/source/news.rst

@@ -5,7 +5,7 @@ Changelog
 19.9.0 / 2018/05/26
 ===================
 
-- the internal module `gunicorn.workers.async` was renamed to `gunicorn.workers.async`
+- the internal module `gunicorn.workers.async` was renamed to `gunicorn.workers.base_async`
   since ``async`` is now a reserved word in Python 3.7
   (:pr:`1527`)
 

gunicorn/workers/geventlet.py

@@ -24,7 +24,7 @@ from eventlet.wsgi import ALREADY_HANDLED as EVENTLET_ALREADY_HANDLED
 import greenlet
 
 from gunicorn.http.wsgi import sendfile as o_sendfile
-from gunicorn.workers._async import AsyncWorker
+from gunicorn.workers.base_async import AsyncWorker
 
 def _eventlet_sendfile(fdout, fdin, offset, nbytes):
     while True:

gunicorn/workers/ggevent.py

@@ -27,7 +27,7 @@ from gevent import pywsgi
 
 import gunicorn
 from gunicorn.http.wsgi import base_environ
-from gunicorn.workers._async import AsyncWorker
+from gunicorn.workers.base_async import AsyncWorker
 from gunicorn.http.wsgi import sendfile as o_sendfile
 
 VERSION = "gevent/%s gunicorn/%s" % (gevent.__version__, gunicorn.__version__)