code: def _delta_filter_command(self, infile, outfile):
          '''Construct delta-filter command'''
          command = 'delta-filter'
  
          if self.min_id is not None:
              command += ' -i ' + str(self.min_id)
  
          if self.min_length is not None:
              command += ' -l ' + str(self.min_length)
  
          return command + ' ' + infile + ' > ' + outfilf _delta_filter_command(self, infile, outfile):
          '''Construct delta-filter command'''
          command = 'delta-filter'
  
          if self.min_id is not None:
              command += ' -i ' + str(self.min_id)
  
          if self.min_length is not None:
              command += ' -l ' + str(self.min_length)
  
          return command + ' ' + infile + ' > ' + outfile
docs: Construct delta-filter command