code: def call_callbacks(self):
      for callback in self.callbacks:
          try:
              callback()
          except:
              t, v, tb = sys.exc_info()
              print("warning: callback failed in WindowList", t, ":", v)
  
file_path: cpython/Lib/idlelib/window.py
imports: from tkinter import Toplevel, TclError
  import sys
label_desc: Use image node_id 7 for calling the WindowList obj's underlying member method code with example usage: obj.call_callbacks() without return types