text: import lv_utils
  import lvgl as lv
  
  btn = lv.btn(lv.scr_act())
  btn.set_height(lv.SIZE.CONTENT)
  btn.align(lv.ALIGN.TOP_LEFT, 30, 30)
  def foo(e):
      if e.get_code() ==  lv.EVENT.CLICKED:
          lv_utils.ex_new_page("exams/widgets_ex/led/p1.py")
  btn.add_event_cb(foo, lv.EVENT.ALL, None)
  label = lv.label(btn)
  label.set_text("p1.py")
  
  