def __init__(self, *args, **kwargs): extensions = to_list(kwargs.pop('extension', None), []) extensions.append(_SignalTrackingMapperExtension()) kwargs['extension'] = extensions Mapper.__init__(self, *args, **kwargs)
def __init__(self, *args, **kwargs): kwargs['extension'] = MyExt() Mapper.__init__(self, *args, **kwargs)
def __init__(self, *args, **kwargs): extensions = to_list(kwargs.pop('extension', None), []) kwargs['extension'] = extensions Mapper.__init__(self, *args, **kwargs)