--- a/eric6/DebugClients/Python/ThreadExtension.py Wed Jan 01 12:00:06 2020 +0100 +++ b/eric6/DebugClients/Python/ThreadExtension.py Wed Jan 01 20:55:58 2020 +0100 @@ -358,6 +358,19 @@ else: module.Timer = TimerWrapper + # Special handling of threading._DummyThread + class DummyThreadWrapper(module._DummyThread, ThreadWrapper): + """ + Wrapper class for threading._DummyThread. + """ + def __init__(self, *args, **kwargs): + """ + Constructor + """ + super(DummyThreadWrapper, self).__init__(*args, **kwargs) + + module._DummyThread = DummyThreadWrapper + # Add hook for *.QThread elif (fullname in ['PyQt4.QtCore', 'PyQt5.QtCore', 'PySide.QtCore', 'PySide2.QtCore'] and