Tweak exception message

Author: 1st1

Lib/asyncio/tasks.py

@@ -115,10 +115,10 @@ def _repr_info(self):
         return base_tasks._task_repr_info(self)
 
     def set_result(self, result):
-        raise RuntimeError('Tasks do not support set_result operation')
+        raise RuntimeError('Task does not support set_result operation')
 
     def set_exception(self, exception):
-        raise RuntimeError('Tasks do not support set_exception operation')
+        raise RuntimeError('Task does not support set_exception operation')
 
     def get_stack(self, *, limit=None):
         """Return the list of stack frames for this task's coroutine.

Modules/_asynciomodule.c

@@ -2244,7 +2244,7 @@ _asyncio_Task_set_result(TaskObj *self, PyObject *result)
 /*[clinic end generated code: output=1dcae308bfcba318 input=9d1a00c07be41bab]*/
 {
     PyErr_SetString(PyExc_RuntimeError,
-                    "Tasks do not support set_result operation");
+                    "Task does not support set_result operation");
     return NULL;
 }
 
@@ -2260,7 +2260,7 @@ _asyncio_Task_set_exception(TaskObj *self, PyObject *exception)
 /*[clinic end generated code: output=bc377fc28067303d input=9a8f65c83dcf893a]*/
 {
     PyErr_SetString(PyExc_RuntimeError,
-                    "Tasks do not support set_exception operation");
+                    "Task doed not support set_exception operation");
     return NULL;
 }