code: def set_tag(note_store, my_tags, tag_id):
          
          new_tag = Types.Tag()
          for my_tag in my_tags.split(','):
              new_tag.name = my_tag
              note_tag_id = EvernoteMgr.create_tag(note_store, new_tag)
              if note_tag_id is not False:
                  tag_id.append(note_tag_id)
              else:
                  return False
          return tag_id
docs: create a tag if not exists
              :param note_store evernote instance
              :param my_tags string
              :param tag_id id of the tag(s) to create
              :return: array of the tag to create