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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 start_processing(self, message, steps=0, warning=True):
 """ Registers the start of a processing operation. :param message: Operation description. :type message: unicode :param steps: Operation steps. :type steps: int :param warning: Emit warning message. :type warning: int :return: Method success. :rtype: bool """


        if self.__is_processing:
            warning and LOGGER.warning(
                "!> {0} | Engine is already processing, 'start_processing' request has been ignored!".format(
                    self.__class__.__name__))
            return False

        LOGGER.debug("> Starting processing operation!")

        self.__is_processing = True
        self.Application_Progress_Status_processing.Processing_progressBar.setRange(0, steps)
        self.Application_Progress_Status_processing.Processing_progressBar.setValue(0)
        self.Application_Progress_Status_processing.show()
        self.set_processing_message(message)
        return True