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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 setup(self, overwrite=False, **kwargs):
 """Run pre-processing step for this component. This will generate all of the auxiliary files needed to instantiate a likelihood object. By default this function will skip any steps for which the output file already exists. Parameters overwrite : bool Run all pre-processing steps even if the output file of that step is present in the working directory. """


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

        self.logger.log(loglevel, 'Running setup for component %s',
                        self.name)

        use_external_srcmap = self.config['gtlike']['use_external_srcmap']

        # Run data selection
        if not use_external_srcmap:
            self._select_data(overwrite=overwrite, **kwargs)

        # Create LT Cube
        if self._ext_ltcube is not None:
            self.logger.log(loglevel, 'Using external LT cube.')
        else:
            self._create_ltcube(overwrite=overwrite, **kwargs)

        self.logger.debug('Loading LT Cube %s', self.files['ltcube'])
        self._ltc = LTCube.create(self.files['ltcube'])

        # Extract tmin, tmax from LT cube
        self._tmin = self._ltc.tstart
        self._tmax = self._ltc.tstop

        self.logger.debug('Creating PSF model')
        self._psf = irfs.PSFModel.create(self.roi.skydir, self._ltc,
                                         self.config['gtlike']['irfs'],
                                         self.config['selection']['evtype'],
                                         self.energies)

        # Bin data and create exposure cube
        if not use_external_srcmap:
            self._bin_data(overwrite=overwrite, **kwargs)
            self._create_expcube(overwrite=overwrite, **kwargs)

        # This is needed in case the exposure map is in HEALPix
        hpxhduname = "HPXEXPOSURES"
        try:
            self._bexp = Map.read(self.files['bexpmap'], hdu=hpxhduname)
        except KeyError:
            self._bexp = Map.read(self.files['bexpmap'])

        # Write ROI XML
        self.roi.write_xml(self.files['srcmdl'], self.config['model'])

        # Create source maps file
        if not use_external_srcmap:
            self._create_srcmaps(overwrite=overwrite)

        if not self.config['data']['cacheft1'] and os.path.isfile(self.files['ft1']):
            self.logger.debug('Deleting FT1 file.')
            os.remove(self.files['ft1'])

        self.logger.log(loglevel, 'Finished setup for component %s',
                        self.name)