add teardownModule

Author: kumaraditya303

Lib/test/test_contextlib_async.py

@@ -16,9 +16,11 @@ def _async_test(func):
     def wrapper(*args, **kwargs):
         coro = func(*args, **kwargs)
         asyncio.run(coro)
-        asyncio.set_event_loop_policy(None)
     return wrapper
 
+def tearDownModule():
+    asyncio.set_event_loop_policy(None)
+
 
 class TestAbstractAsyncContextManager(unittest.TestCase):