code: def test_str_substring_iteration(self):
      self.run_test(
          "def str_substring_iteration(s): return list(map(ord, s[1:-1]))",
          "pythran",
          str_substring_iteration=[str],
      )
  
imports: from pythran.tests import TestEnv
  from pythran.typing import List
  import unittest
label_desc: Use image node_id 38 for calling the TestStr obj's underlying member method code with example usage: obj.test_str_substring_iteration() without return types