class_docstr: The debugger interface.
  
  This class handles the drawing of the debugger window and
  the interactions with the underlying debugger session.
docstr: Set a filename-lineno breakpoint in the debugger.
  
  Called from self.load_breakpoints and EW.setbreakpoint
docstr_tok: ["Set","a","filename-lineno","breakpoint","in","the","debugger",".","Called","from","self.load_breakpoints","and","EW.setbreakpoint"]
code: def set_breakpoint(self, filename, lineno):
      """Set a filename-lineno breakpoint in the debugger.
  
      Called from self.load_breakpoints and EW.setbreakpoint
      """
      self.idb.set_break(filename, lineno)
  
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 20 for calling the Debugger obj's underlying member method code with example usage: obj.set_breakpoint(filename, lineno) without return types