code: def main():
      w = tw.Watcher()
      s1 = w.create_stream()
      s2 = w.create_stream(
          name="accuracy",
          vis_args=tw.VisArgs(
              vis_type="line",
              xtitle="X-Axis",
              clear_after_each=False,
              history_len=2,
          ),
      )
      s3 = w.create_stream(name="loss", expr="lambda d:d.loss")
      w.make_notebook()
  
label_desc: Use image node_id 1 for calling a global function with example usage: main() without return types