code: def view(self):
      top = self.y - 2
      bottom = self.lastvisiblechild().y + 17
      height = bottom - top
      visible_top = self.canvas.canvasy(0)
      visible_height = self.canvas.winfo_height()
      visible_bottom = self.canvas.canvasy(visible_height)
      if visible_top <= top and bottom <= visible_bottom:
          return
      x0, y0, x1, y1 = self.canvas._getints(self.canvas["scrollregion"])
      if top >= visible_top and height <= visible_height:
          fraction = top + height - visible_height
      else:
          fraction = top
      fraction = float(fraction) / y1
      self.canvas.yview_moveto(fraction)
  
imports: import os
  from tkinter import *
  from tkinter.ttk import Frame, Scrollbar
  from idlelib.config import idleConf
  from idlelib import zoomheight
label_desc: Use image node_id 11 for calling the TreeNode obj's underlying member method code with example usage: obj.view() without return types