code: def _get_or_default(mylist, i, default=None):
      """return list item number, or default if don't exist"""
      if i >= len(mylist):
          return default
      else:
          return mylist[i]
  
imports: from __future__ import absolute_import
  import os
  import re
  import sys
  import textwrap
  from string import Formatter
  from IPython.testing.skipdoctest import skip_doctest_py3, skip_doctest
  from IPython.utils import py3compat
label_desc: Use image node_id 13 for calling a global function with example usage: _get_or_default(mylist, i, default) and returns: default, mylist