code: def usearch_sort_by_abundance(
          fasta_filepath,
          output_filepath=None,
          sizein=True,
          sizeout=True,
          minsize=0,
          log_name="abundance_sort.log",
          usersort=False,
          HALT_EXEC=False,
          save_intermediate_files=False,
          remove_usearch_logs=False,
          working_dir=None):
      if not output_filepath:
          _, output_filepath = mkstemp(prefix='usearch_abundance_sorted',
                                       suffix='.fasta')
      log_filepath = join(
          working_dir,
          "minsize_" + str(minsize) + "_" + log_name)
      params = {}
      app = Usearch(params, WorkingDir=working_dir, HALT_EXEC=HALT_EXEC)
      if usersort:
          app.Parameters['--usersort'].on()
      if minsize:
          app.Parameters['--minsize'].on(minsize)
      if sizein:
          app.Parameters['--sizein'].on()
      if sizeout:
          app.Parameters['--sizeout'].on()
      data = {'--sortsize': fasta_filepath,
              '--output': output_filepath
              }
      if not remove_usearch_logs:
          data['--log'] = log_filepath
      try:
          app_result = app(data)
      except ApplicationError:
          raise ValueError('No data following filter steps, please check ' +
                           'parameter settings for usearch_qf.')
      return app_result, output_filepath