QtAsyncio: Clarify usage of singleShot w/o context

The singleShot overload that accepts a context argument was used inside
the do() method of the QAsyncioExecutorWrapper class, but this usage was
unnecessary and adds confusion.

Task-number: PYSIDE-769
Change-Id: Idcdd99eda6ae3bfd11ec50b9a42ff15ade005cc9
Reviewed-by: Cristian Maureira-Fredes <[email protected]>
Reviewed-by: Christian Tismer <[email protected]>

Author: adrianghc

sources/pyside6/PySide6/QtAsyncio/events.py

@@ -63,7 +63,10 @@ def do(self):
         self._loop = QEventLoop()
         asyncio.events._set_running_loop(self._loop)
 
-        QTimer.singleShot(0, self._loop, lambda: self._cb())
+        # The do() function will always be executed from the new executor
+        # thread and never from outside, so using the overload without the
+        # context argument is sufficient.
+        QTimer.singleShot(0, lambda: self._cb())
 
         self._loop.exec()
         if self._exception is not None: