code: def make_arrow(pad):
      """generate the leading arrow in front of traceback or debugger"""
      if pad >= 2:
          return "-" * (pad - 2) + "> "
      elif pad == 1:
          return ">"
      return ""
  
imports: from __future__ import print_function
  import bdb
  import functools
  import inspect
  import sys
  import warnings
  from IPython import get_ipython
  from IPython.utils import PyColorize, ulinecache
  from IPython.utils import coloransi, py3compat
  from IPython.core.excolors import exception_colors
  from IPython.testing.skipdoctest import skip_doctest
  from pdb import Pdb
label_desc: Use image node_id 1 for calling a global function with example usage: make_arrow(pad) and returns: str, unknown, str