class_docstr: Global/local namespace viewer for debugger GUI.
code: def close(self):
      self.frame.destroy()
  
imports: import bdb
  import os
  from tkinter import *
  from tkinter.ttk import Frame, Scrollbar
  from idlelib import macosx
  from idlelib.scrolledlist import ScrolledList
  from idlelib.window import ListedToplevel
label_desc: Use image node_id 3 for calling the NamespaceViewer obj's underlying member method code with example usage: obj.close() without return types