bpo-43216: Remove @asyncio.coroutine (GH-26369)

Remove the @asyncio.coroutine decorator
enabling legacy generator-based coroutines to be compatible with async/await
code; remove asyncio.coroutines.CoroWrapper used for wrapping
legacy coroutine objects in the debug mode.

The decorator has been deprecated
since Python 3.8 and the removal was initially scheduled for Python 3.10.

1 files changed, 0 insertions, 14 deletions

diff --git a/Lib/test/test_asyncio/test_pep492.py b/Lib/test/test_asyncio/test_pep492.py
index 4bd50f4..f833f78 100644
--- a/Lib/test/test_asyncio/test_pep492.py
+++ b/Lib/test/test_asyncio/test_pep492.py
@@ -123,20 +123,6 @@ class CoroutineTests(BaseTest):
         async def foo(): pass
         self.assertTrue(asyncio.iscoroutinefunction(foo))
 
-    def test_function_returning_awaitable(self):
-        class Awaitable:
-            def __await__(self):
-                return ('spam',)
-
-        with self.assertWarns(DeprecationWarning):
-            @asyncio.coroutine
-            def func():
-                return Awaitable()
-
-        coro = func()
-        self.assertEqual(coro.send(None), 'spam')
-        coro.close()
-
     def test_async_def_coroutines(self):
         async def bar():
             return 'spam'