old_contents: # from 語料庫.models import 語料狀況表
  from 語料庫.models import 語料表
  from 語料庫.管理.校對 import 校對表管理
  from django.utils.timezone import now
  from 語料庫.widgets.目標音檔欄 import 目標音檔欄
  # from 語料庫.管理.檢查 import 檢查表管理
  
  
  class Kaldi篩掉表(語料表):
  
      class Meta:
          proxy = True
          verbose_name = "Kaldi篩掉表"
          verbose_name_plural = verbose_name
  
  
  class Kaldi篩掉表管理(校對表管理, 目標音檔欄):
      # change list
      list_display = [
          'id',
          '目標音檔',
          '漢字', '本調臺羅', '口語調臺羅',
          '頭一版資料'
      ]
      ordering = ['id']
      list_per_page = 10
      actions = []
      list_filter = ()
      list_display_links = None
  
      def get_queryset(self, request):
          qs = super(校對表管理, self).get_queryset(request)
          return qs.filter(sing5hong5有揀出來用無=False)
  
new_contents: # from 語料庫.models import 語料狀況表
  from 語料庫.models import 語料表
  from 語料庫.管理.校對 import 校對表管理
  from 語料庫.widgets.目標音檔欄 import 目標音檔欄
  # from 語料庫.管理.檢查 import 檢查表管理
  
  
  class Kaldi篩掉表(語料表):
  
      class Meta:
          proxy = True
          verbose_name = "Kaldi篩掉表"
          verbose_name_plural = verbose_name
  
  
  class Kaldi篩掉表管理(校對表管理, 目標音檔欄):
      # change list
      list_display = [
          'id',
          '目標音檔',
          '漢字', '本調臺羅', '口語調臺羅',
          '頭一版資料'
      ]
      ordering = ['id']
      list_per_page = 10
      actions = []
      list_filter = ()
      list_display_links = None
  
      def get_queryset(self, request):
          qs = super(校對表管理, self).get_queryset(request)
          return qs.filter(sing5hong5有揀出來用無=False)
  
subject: remove redundant import