code: def json(content, request=None, response=None, ensure_ascii=False, **kwargs):
      
      if hasattr(content, 'read'):
          return content
  
      if isinstance(content, tuple) and getattr(content, '_fields', None):
          content = {field: getattr(content, field) for field in content._fields}
      return json_converter.dumps(content, default=_json_converter, ensure_ascii=ensure_ascii, **kwargs).encode('utf8')
docs: JSON (Javascript Serialized Object Notation)