Reword error message for unawaitable types.

"object $type can't be ..." -> "'$type' object can't be ..."

Lib/test/test_asyncio/test_locks.py

@@ -39,7 +39,7 @@ async def test_lock(self):
 
         with self.assertRaisesRegex(
             TypeError,
-            "object Lock can't be used in 'await' expression"
+            "'Lock' object can't be used in 'await' expression"
         ):
             await lock
 
@@ -77,7 +77,7 @@ async def test_lock_by_with_statement(self):
             self.assertFalse(lock.locked())
             with self.assertRaisesRegex(
                 TypeError,
-                r"object \w+ can't be used in 'await' expression"
+                r"'\w+' object can't be used in 'await' expression"
             ):
                 with await lock:
                     pass
@@ -849,7 +849,7 @@ async def test_semaphore(self):
 
         with self.assertRaisesRegex(
             TypeError,
-            "object Semaphore can't be used in 'await' expression",
+            "'Semaphore' object can't be used in 'await' expression",
         ):
             await sem
 
@@ -1178,7 +1178,7 @@ async def test_barrier(self):
         self.assertIn("filling", repr(barrier))
         with self.assertRaisesRegex(
             TypeError,
-            "object Barrier can't be used in 'await' expression",
+            "'Barrier' object can't be used in 'await' expression",
         ):
             await barrier
 

Lib/test/test_coroutines.py

@@ -1036,7 +1036,7 @@ class Awaitable:
         async def foo(): return await Awaitable()
 
         with self.assertRaisesRegex(
-            TypeError, "object Awaitable can't be used in 'await' expression"):
+            TypeError, "'Awaitable' object can't be used in 'await' expression"):
 
             run_async(foo())
 

Objects/genobject.c

@@ -1043,7 +1043,7 @@ _PyCoro_GetAwaitableIter(PyObject *o)
     }
 
     PyErr_Format(PyExc_TypeError,
-                 "object %.100s can't be used in 'await' expression",
+                 "'%.100s' object can't be used in 'await' expression",
                  ot->tp_name);
     return NULL;
 }