code: def parse(self):
          
  
          if os.path.exists(self.pklname):        # check for pkl with binary info
              logger.info('Found bdf pkl file %s. Loading...' % (self.pklname))
              try:
                  with open(self.pklname,'rb') as pkl:
                      (self.mimemsg, self.headxml, self.sizeinfo, self.binarychunks, self.n_integrations, self.n_antennas, self.n_baselines, self.n_basebands, self.n_spws, self.n_channels, self.crosspols) = pickle.load(pkl)
              except:
                  logger.warning('Something went wrong. Parsing bdf directly...')
                  self._parse()
          else:
              if self.pklname:
                  logger.info('Could not find bdf pkl file %s.' % (self.pklname))
              self._parse()
  
          self.headsize, self.intsize = self.calc_intsize()
  
          return self
docs: wrapper for original parse function. will read pkl with bdf info, if available.