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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 _diffrsp_app(self,xmlfile=None, **kwargs):
 """ Compute the diffuse response """

        loglevel = kwargs.get('loglevel', self.loglevel)

        self.logger.log(loglevel, 'Computing diffuse repsonce for component %s.',
                        self.name)

        # set the srcmdl
        srcmdl_file = self.files['srcmdl']
        if xmlfile is not None:
            srcmdl_file = self.get_model_path(xmlfile)

        kw = dict(evfile=self.files['ft1'],
            scfile=self.data_files['scfile'],
            irfs = self.config['gtlike']['irfs'],
            evtype = self.config['selection']['evtype'],
            srcmdl = srcmdl_file)

        run_gtapp('gtdiffrsp', self.logger, kw, loglevel=loglevel)
        return