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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def destroy(self):
 """Recursively destroy all Controllers The method remove all controllers, which calls the destroy method of the child controllers. Then, all registered models are relieved and and the widget hand by the initial view argument is destroyed. """

        self.disconnect_all_signals()
        controller_names = [key for key in self.__child_controllers]
        for controller_name in controller_names:
            self.remove_controller(controller_name)
        self.relieve_all_models()
        if self.parent:
            self.__parent = None
        if self._view_initialized:
            # print(self.__class__.__name__, "destroy view", self.view, self)
            self.view.get_top_widget().destroy()
            self.view = None
            self._Observer__PROP_TO_METHS.clear()  # prop name --> set of observing methods
            self._Observer__METH_TO_PROPS.clear()  # method --> set of observed properties
            self._Observer__PAT_TO_METHS.clear() # like __PROP_TO_METHS but only for pattern names (to optimize search)
            self._Observer__METH_TO_PAT.clear()  # method --> pattern
            self._Observer__PAT_METH_TO_KWARGS.clear()  # (pattern, method) --> info
            self.observe = None
        else:
            logger.warning("The controller {0} seems to be destroyed before the view was fully initialized. {1} "
                           "Check if you maybe do not call {2} or there exist most likely threading problems."
                           "".format(self.__class__.__name__, self.model, ExtendedController.register_view))