code: def _convert_attribute_to_tag(key, attr):
      
      if isinstance(attr, bool):
          return jaeger.Tag(
              key=key,
              vBool=attr,
              vType=jaeger.TagType.BOOL)
      if isinstance(attr, str):
          return jaeger.Tag(
              key=key,
              vStr=attr,
              vType=jaeger.TagType.STRING)
      if isinstance(attr, int):
          return jaeger.Tag(
              key=key,
              vLong=attr,
              vType=jaeger.TagType.LONG)
      if isinstance(attr, float):
          return jaeger.Tag(
              key=key,
              vDouble=attr,
              vType=jaeger.TagType.DOUBLE)
      logging.warn('Could not serialize attribute \
              {}:{} to tag'.format(key, attr))
      return None
docs: Convert the attributes to jaeger tags.