code: def test_20731(self):
      sub = subprocess.Popen(
          [
              sys.executable,
              os.path.join(
                  os.path.dirname(__file__),
                  "tokenizedata",
                  "coding20731.py",
              ),
          ],
          stderr=subprocess.PIPE,
      )
      err = sub.communicate()[1]
      self.assertEqual(sub.returncode, 0)
      self.assertNotIn(b"SyntaxError", err)
  
imports: import unittest
  from test.support import script_helper, captured_stdout, requires_subprocess, requires_resource
  from test.support.os_helper import TESTFN, unlink, rmtree
  from test.support.import_helper import unload
  import importlib
  import os
  import sys
  import subprocess
  import tempfile
label_desc: Use image node_id 7 for calling the MiscSourceEncodingTest obj's underlying member method code with example usage: obj.test_20731() without return types