asyncio: repr(Task) now also contains the line number even if the coroutine is

done: use the first line number of the code object instead of the current line
number of the generator frame.

The name of the coroutine is not enough because many coroutines may have the
same name. It's a common case in asyncio tests for example.

Lib/asyncio/tasks.py

@@ -208,9 +208,11 @@ class Task(futures.Future):
         if iscoroutine(coro):
             filename = coro.gi_code.co_filename
             if coro.gi_frame is not None:
-                text += ' at %s:%s' % (filename, coro.gi_frame.f_lineno)
+                lineno = coro.gi_frame.f_lineno
+                text += ' at %s:%s' % (filename, lineno)
             else:
-                text += ' done at %s' % filename
+                lineno = coro.gi_code.co_firstlineno
+                text += ' done at %s:%s' % (filename, lineno)
         res = res[:i] + '(<{}>)'.format(text) + res[i:]
         return res
 

Lib/test/test_asyncio/test_tasks.py

@@ -148,12 +148,14 @@ class TaskTests(test_utils.TestCase):
         self.assertRaises(asyncio.CancelledError,
                           self.loop.run_until_complete, t)
         self.assertEqual(repr(t),
-                         'Task(<notmuch done at %s>)<CANCELLED>' % filename)
+                         'Task(<notmuch done at %s:%s>)<CANCELLED>'
+                         % (filename, lineno))
 
         t = asyncio.Task(notmuch(), loop=self.loop)
         self.loop.run_until_complete(t)
         self.assertEqual(repr(t),
-                         "Task(<notmuch done at %s>)<result='abc'>" % filename)
+                         "Task(<notmuch done at %s:%s>)<result='abc'>"
+                         % (filename, lineno))
 
     def test_task_repr_custom(self):
         @asyncio.coroutine