Add name keyword argument to loop.create_task()

* Fixes #309.
* Refs bpo-34270.

tests/test_base.py

@@ -541,6 +541,46 @@ async def coro():
         self.assertFalse(isinstance(task, MyTask))
         self.loop.run_until_complete(task)
 
+    def test_set_task_name(self):
+        if self.implementation == 'asyncio' and sys.version_info < (3, 8, 0):
+            raise unittest.SkipTest('unsupported task name')
+
+        self.loop._process_events = mock.Mock()
+
+        result = None
+
+        class MyTask(asyncio.Task):
+            def set_name(self, name):
+                nonlocal result
+                result = name + "!"
+
+            def get_name(self):
+                return result
+
+        async def coro():
+            pass
+
+        factory = lambda loop, coro: MyTask(coro, loop=loop)
+
+        self.assertIsNone(self.loop.get_task_factory())
+        task = self.loop.create_task(coro(), name="mytask")
+        self.assertFalse(isinstance(task, MyTask))
+        if sys.version_info >= (3, 8, 0):
+            self.assertEqual(task.get_name(), "mytask")
+        self.loop.run_until_complete(task)
+
+        self.loop.set_task_factory(factory)
+        self.assertIs(self.loop.get_task_factory(), factory)
+
+        task = self.loop.create_task(coro(), name="mytask")
+        self.assertTrue(isinstance(task, MyTask))
+        self.assertEqual(result, "mytask!")
+        self.assertEqual(task.get_name(), "mytask!")
+        self.loop.run_until_complete(task)
+
+        self.loop.set_task_factory(None)
+        self.assertIsNone(self.loop.get_task_factory())
+
     def _compile_agen(self, src):
         try:
             g = {}

uvloop/loop.pyx

@@ -1386,16 +1386,29 @@ cdef class Loop:
         """Create a Future object attached to the loop."""
         return self._new_future()
 
-    def create_task(self, coro):
+    def create_task(self, coro, *, name=None):
         """Schedule a coroutine object.
 
         Return a task object.
+
+        If name is not None, task.set_name(name) will be called if the task
+        object has the set_name attribute, true for default Task in Python 3.8.
         """
         self._check_closed()
         if self._task_factory is None:
             task = aio_Task(coro, loop=self)
         else:
             task = self._task_factory(self, coro)
+
+        # copied from asyncio.tasks._set_task_name (bpo-34270)
+        if name is not None:
+            try:
+                set_name = task.set_name
+            except AttributeError:
+                pass
+            else:
+                set_name(name)
+
         return task
 
     def set_task_factory(self, factory):