      Given a model class, return the view name to use for URL relationships
      that refer to instances of the model.
      """
      return '%(model_name)s-detail' % {
          'app_label': model._meta.app_label,
          'model_name': model._meta.object_name.lower()
      }
  
  
  def get_field_kwargs(field_name, model_field):
 
</s> remove             'lang_htmls': ["rest_framework/docs/langs/%s.html" % l for l in self.languages],
            'lang_intro_htmls': ["rest_framework/docs/langs/%s-intro.html" % l for l in self.languages],
 </s> add             'lang_htmls': ["rest_framework/docs/langs/%s.html" % language for language in self.languages],
            'lang_intro_htmls': ["rest_framework/docs/langs/%s-intro.html" % language for language in self.languages], </s> remove             expected = ['Must be a valid boolean.'.format(input_value)]
 </s> add             expected = ['Must be a valid boolean.'] </s> remove pycodestyle==2.5.0
 </s> add pycodestyle==2.6.0 </s> remove flake8==3.7.9
 </s> add flake8==3.8.3
      Given a model class, return the view name to use for URL relationships
      that refer to instances of the model.
      """
      return '%(model_name)s-detail' % {

          'model_name': model._meta.object_name.lower()
      }
  
  
  def get_field_kwargs(field_name, model_field):
keep keep keep keep replace keep keep keep keep keep
 Bump flake8 to 3.8.3 (#7521) 
rest_framework/utils/field_mapping.py