          to Response's Content-Type
          """
          headers = {"HTTP_ACCEPT": RendererC.media_type}
          resp = self.client.get('/', **headers)
          expected = "{0}; charset={1}".format(RendererC.media_type, RendererC.charset)
          self.assertEqual(expected, resp['Content-Type'])
  
      def test_content_type_set_explicitly_on_response(self):
          """
          The content type may be set explicitly on the response.
 
</s> remove         expected = "{0}; charset={1}".format(RendererA.media_type, 'utf-8')
 </s> add         expected = "{}; charset={}".format(RendererA.media_type, 'utf-8') </s> remove         self.assertEqual(resp.content, six.b(''))
 </s> add         self.assertEqual(resp.content, b'') </s> remove         self.assertEqual(resp.content, six.b(''))
 </s> add         self.assertEqual(resp.content, b'') </s> remove         content = six.b('qwerty')
 </s> add         content = b'qwerty' </s> remove         content = six.b('qwerty')
 </s> add         content = b'qwerty'
        expected = "{}; charset={}".format(RendererC.media_type, RendererC.charset)
          to Response's Content-Type
          """
          headers = {"HTTP_ACCEPT": RendererC.media_type}
          resp = self.client.get('/', **headers)
        expected = "{}; charset={}".format(RendererC.media_type, RendererC.charset)
          self.assertEqual(expected, resp['Content-Type'])
  
      def test_content_type_set_explicitly_on_response(self):
          """
          The content type may be set explicitly on the response.
keep keep keep keep replace keep keep keep keep keep
 Dropped Python 2 compatibility. (#6615)

Thanks to Jon Dufresne (@jdufresne) for review.

Co-authored-by: Asif Saif Uddin <auvipy@gmail.com>
Co-authored-by: Rizwan Mansuri <Rizwan@webbyfox.com> 
tests/test_response.py