Fix asyncio unittests in debug mode

diff --git a/Lib/asyncio/coroutines.py b/Lib/asyncio/coroutines.py
index 896cc560789110c953c3d2891dcd533f2bb297bf..a70eb1dd91bd0b9cd9e5fd563b63fcb98cf6f710 100644 (file)
--- a/Lib/asyncio/coroutines.py
+++ b/Lib/asyncio/coroutines.py
@@ -252,6 +252,8 @@ def _format_coroutine(coro):
     if isinstance(coro, CoroWrapper):
         func = coro.func
         coro_name = coro.__qualname__
+        if coro_name is not None:
+            coro_name = '{}()'.format(coro_name)
     else:
         func = coro