old_contents: from django.shortcuts import _get_queryset
  
  
  def get_object_or_none(klass, *args, **kwargs):
      """
      Uses get() to return an object, or None if the object
      does not exist.
  
      klass may be a Model, Manager, or QuerySet object. All other passed
      arguments and keyword arguments are used in the get() query.
  
      Note: Like with get(), an MultipleObjectsReturned will be raised if more than one
      object is found.
      """
      queryset = _get_queryset(klass)
      try:
          return queryset.get(*args, **kwargs)
      except queryset.model.DoesNotExist:
          return None
  
  
  def get_list_or_none(klass, *args, **kwargs):
      """
      Uses filter() to return a list of objects, or return None if
      the list is empty.
  
      klass may be a Model, Manager, or QuerySet object. All other passed
      arguments and keyword arguments are used in the filter() query.
      """
      queryset = _get_queryset(klass)
      obj_list = list(queryset.filter(*args, **kwargs))
      if not obj_list:
          return None
      return obj_list
  
new_contents: from django.shortcuts import _get_queryset
  
  
  def get_object_or_none(klass, *args, **kwargs):
      """
      Uses get() to return an object, or None if the object
      does not exist.
  
      klass may be a Model, Manager, or QuerySet object. All other passed
      arguments and keyword arguments are used in the get() query.
  
      Note: Like with get(), an MultipleObjectsReturned will be raised if more than one
      object is found.
      """
      queryset = _get_queryset(klass)
      try:
          return queryset.get(*args, **kwargs)
      except queryset.model.DoesNotExist:
          return None
  
  
  def get_list_or_none(klass, *args, **kwargs):
      """
      Uses filter() to return a list of objects, or return None if
      the list is empty.
  
      klass may be a Model, Manager, or QuerySet object. All other passed
      arguments and keyword arguments are used in the filter() query.
      """
      queryset = _get_queryset(klass)
      object_list = list(queryset.filter(*args, **kwargs))
      if not object_list:
          return None
      return object_list
  
subject: use long variable name