code: def __init__(self, master, **kw):
      Toplevel.__init__(self, master, kw)
      registry.add(self)
      self.focused_widget = self
  
file_path: cpython/Lib/idlelib/window.py
imports: from tkinter import Toplevel, TclError
  import sys
label_desc: Use image node_id 1 to create a new ListedToplevel object from inherited base classes: Toplevel with example: obj = ListedToplevel(master)