code: def L1(s):
      return s.decode("latin-1")
  
imports: import unittest
  import dbm
  import shelve
  import pickle
  import os
  from test.support import os_helper
  from collections.abc import MutableMapping
  from test.test_dbm import dbm_iterator
  from test import mapping_tests
label_desc: Use image node_id 1 for calling a global function with example usage: L1(s) and returns: s