Removed asyncio.Task.current_task() and asyncio.Task.all_tasks()

Author: remilapeyre

Doc/library/asyncio-task.rst

@@ -962,31 +962,6 @@ Task Object
 
       .. versionadded:: 3.8
 
-   .. classmethod:: all_tasks(loop=None)
-
-      Return a set of all tasks for an event loop.
-
-      By default all tasks for the current event loop are returned.
-      If *loop* is ``None``, the :func:`get_event_loop` function
-      is used to get the current loop.
-
-      .. deprecated-removed:: 3.7 3.9
-
-         Do not call this as a task method. Use the :func:`asyncio.all_tasks`
-         function instead.
-
-   .. classmethod:: current_task(loop=None)
-
-      Return the currently running task or ``None``.
-
-      If *loop* is ``None``, the :func:`get_event_loop` function
-      is used to get the current loop.
-
-      .. deprecated-removed:: 3.7 3.9
-
-         Do not call this as a task method.  Use the
-         :func:`asyncio.current_task` function instead.
-
 
 .. _asyncio_generator_based_coro:
 

Lib/asyncio/tasks.py

@@ -113,34 +113,6 @@ class Task(futures._PyFuture):  # Inherit Python Task implementation
     # status is still pending
     _log_destroy_pending = True
 
-    @classmethod
-    def current_task(cls, loop=None):
-        """Return the currently running task in an event loop or None.
-
-        By default the current task for the current event loop is returned.
-
-        None is returned when called not in the context of a Task.
-        """
-        warnings.warn("Task.current_task() is deprecated since Python 3.7, "
-                      "use asyncio.current_task() instead",
-                      DeprecationWarning,
-                      stacklevel=2)
-        if loop is None:
-            loop = events.get_event_loop()
-        return current_task(loop)
-
-    @classmethod
-    def all_tasks(cls, loop=None):
-        """Return a set of all tasks for an event loop.
-
-        By default all tasks for the current event loop are returned.
-        """
-        warnings.warn("Task.all_tasks() is deprecated since Python 3.7, "
-                      "use asyncio.all_tasks() instead",
-                      DeprecationWarning,
-                      stacklevel=2)
-        return _all_tasks_compat(loop)
-
     def __init__(self, coro, *, loop=None, name=None):
         super().__init__(loop=loop)
         if self._source_traceback:

Lib/test/test_asyncio/test_tasks.py

@@ -1943,32 +1943,6 @@ async def coro():
         self.assertEqual(res, 'test')
         self.assertIsNone(t2.result())
 
-
-    def test_current_task_deprecated(self):
-        Task = self.__class__.Task
-
-        with self.assertWarns(DeprecationWarning):
-            self.assertIsNone(Task.current_task(loop=self.loop))
-
-        async def coro(loop):
-            with self.assertWarns(DeprecationWarning):
-                self.assertIs(Task.current_task(loop=loop), task)
-
-            # See http://bugs.python.org/issue29271 for details:
-            asyncio.set_event_loop(loop)
-            try:
-                with self.assertWarns(DeprecationWarning):
-                    self.assertIs(Task.current_task(None), task)
-                with self.assertWarns(DeprecationWarning):
-                    self.assertIs(Task.current_task(), task)
-            finally:
-                asyncio.set_event_loop(None)
-
-        task = self.new_task(self.loop, coro(self.loop))
-        self.loop.run_until_complete(task)
-        with self.assertWarns(DeprecationWarning):
-            self.assertIsNone(Task.current_task(loop=self.loop))
-
     def test_current_task(self):
         self.assertIsNone(asyncio.current_task(loop=self.loop))
 
@@ -2305,16 +2279,6 @@ def foo():
         self.assertIsInstance(exception, Exception)
         self.assertEqual(exception.args, ("foo", ))
 
-    def test_all_tasks_deprecated(self):
-        Task = self.__class__.Task
-
-        async def coro():
-            with self.assertWarns(DeprecationWarning):
-                assert Task.all_tasks(self.loop) == {t}
-
-        t = self.new_task(self.loop, coro())
-        self.loop.run_until_complete(t)
-
     def test_log_destroyed_pending_task(self):
         Task = self.__class__.Task
 
@@ -2337,15 +2301,7 @@ def kill_me(loop):
 
         self.assertEqual(asyncio.all_tasks(loop=self.loop), {task})
 
-        # See http://bugs.python.org/issue29271 for details:
-        asyncio.set_event_loop(self.loop)
-        try:
-            with self.assertWarns(DeprecationWarning):
-                self.assertEqual(Task.all_tasks(), {task})
-            with self.assertWarns(DeprecationWarning):
-                self.assertEqual(Task.all_tasks(None), {task})
-        finally:
-            asyncio.set_event_loop(None)
+        asyncio.set_event_loop(None)
 
         # execute the task so it waits for future
         self.loop._run_once()

Misc/NEWS.d/next/Library/2020-06-15-00-13-57.bpo-40967._dx3OO.rst

@@ -0,0 +1,2 @@
+Removed :meth:`asyncio.Task.current_task` and
+:meth:`asyncio.Task.all_tasks`. Patch contributed by Rémi Lapeyre.