diff -Nru python-ws4py-0.4.2+dfsg1/debian/changelog python-ws4py-0.4.2+dfsg1/debian/changelog
--- python-ws4py-0.4.2+dfsg1/debian/changelog	2017-11-22 14:29:35.000000000 +0000
+++ python-ws4py-0.4.2+dfsg1/debian/changelog	2018-07-29 07:01:36.000000000 +0000
@@ -1,3 +1,9 @@
+python-ws4py (0.4.2+dfsg1-2ubuntu1) cosmic; urgency=medium
+
+  * Fix compatibility with Python 3.7. Closes: #903529.
+
+ -- Matthias Klose <doko@ubuntu.com>  Sun, 29 Jul 2018 09:01:36 +0200
+
 python-ws4py (0.4.2+dfsg1-2) unstable; urgency=medium
 
   * Team upload.
diff -Nru python-ws4py-0.4.2+dfsg1/debian/patches/fix-py37-compat.diff python-ws4py-0.4.2+dfsg1/debian/patches/fix-py37-compat.diff
--- python-ws4py-0.4.2+dfsg1/debian/patches/fix-py37-compat.diff	1970-01-01 00:00:00.000000000 +0000
+++ python-ws4py-0.4.2+dfsg1/debian/patches/fix-py37-compat.diff	2018-07-29 07:01:24.000000000 +0000
@@ -0,0 +1,81 @@
+Index: b/test/autobahn_test_servers.py
+===================================================================
+--- a/test/autobahn_test_servers.py
++++ b/test/autobahn_test_servers.py
+@@ -142,7 +142,7 @@ def run_python_wsgi(host="127.0.0.1", po
+     """
+     run_python_wsgi_async(host, port, False)
+ 
+-def run_python_wsgi_async(host="127.0.0.1", port=9010, async=True):
++def run_python_wsgi_async(host="127.0.0.1", port=9010, async_=True):
+     """
+     Runs wsgi server on python 2.x with async middleware"
+     """
+@@ -153,7 +153,7 @@ def run_python_wsgi_async(host="127.0.0.
+     from ws4py.server.wsgiutils import WebSocketWSGIApplication
+ 
+     app = WebSocketWSGIApplication(handler_cls=EchoWebSocket)
+-    if async:
++    if async_:
+         def middleware(app):
+             def later(environ, start_response):
+                 for part in app(environ, start_response):
+Index: b/ws4py/async_websocket.py
+===================================================================
+--- a/ws4py/async_websocket.py
++++ b/ws4py/async_websocket.py
+@@ -18,6 +18,11 @@ delegated_generator_websocket_on_top_of_
+ import asyncio
+ import types
+ 
++try:                                                     # pragma: no cover
++    asyncio_ensure_future = asyncio.ensure_future        # Python >= 3.5
++except AttributeError:                                   # pragma: no cover
++    asyncio_ensure_future = getattr(asyncio, 'async')    # Python < 3.5
++
+ from ws4py.websocket import WebSocket as _WebSocket
+ from ws4py.messaging import Message
+ 
+@@ -84,7 +89,7 @@ class WebSocket(_WebSocket):
+         def closeit():
+             yield from self.proto.writer.drain()
+             self.proto.writer.close()
+-        asyncio.async(closeit())
++        asyncio.asyncio_ensure_future(closeit())
+ 
+     def _write(self, data):
+         """
+@@ -94,7 +99,7 @@ class WebSocket(_WebSocket):
+         def sendit(data):
+             self.proto.writer.write(data)
+             yield from self.proto.writer.drain()
+-        asyncio.async(sendit(data))
++        asyncio.asyncio_ensure_future(sendit(data))
+ 
+     @asyncio.coroutine
+     def run(self):
+Index: b/ws4py/server/tulipserver.py
+===================================================================
+--- a/ws4py/server/tulipserver.py
++++ b/ws4py/server/tulipserver.py
+@@ -6,6 +6,11 @@ import io
+ 
+ import asyncio
+ 
++try:                                                     # pragma: no cover
++    asyncio_ensure_future = asyncio.ensure_future        # Python >= 3.5
++except AttributeError:                                   # pragma: no cover
++    asyncio_ensure_future = getattr(asyncio, 'async')    # Python < 3.5
++
+ from ws4py import WS_KEY, WS_VERSION
+ from ws4py.exc import HandshakeError
+ from ws4py.websocket import WebSocket
+@@ -40,7 +45,7 @@ class WebSocketProtocol(asyncio.StreamRe
+         #self.stream.set_transport(transport)
+         asyncio.StreamReaderProtocol.connection_made(self, transport)
+         # Let make it concurrent for others to tag along
+-        f = asyncio.async(self.handle_initial_handshake())
++        f = asyncio.asyncio_ensure_future(self.handle_initial_handshake())
+         f.add_done_callback(self.terminated)
+ 
+     @property
diff -Nru python-ws4py-0.4.2+dfsg1/debian/patches/series python-ws4py-0.4.2+dfsg1/debian/patches/series
--- python-ws4py-0.4.2+dfsg1/debian/patches/series	2017-11-18 21:53:16.000000000 +0000
+++ python-ws4py-0.4.2+dfsg1/debian/patches/series	2018-07-29 06:52:07.000000000 +0000
@@ -1,2 +1,3 @@
 0001-Fix-tests.patch
 0002-Make-intersphinx-use-object.inv-from-python-doc.patch
+fix-py37-compat.diff