class_docstr: Supply user_line and user_exception functions for Bdb.
docstr: Handle an the occurrence of an exception.
docstr_tok: ["Handle","an","the","occurrence","of","an","exception","."]
code: def user_exception(self, frame, exc_info):
      """Handle an the occurrence of an exception."""
      if _in_rpc_code(frame):
          self.set_step()
          return
      message = _frame2message(frame)
      self.gui.interaction(message, frame, exc_info)
  
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 Idb obj's underlying member method code with example usage: obj.user_exception(frame, exc_info) without return types