code: def test_invisible_characters(self):
      self._check_error(
          'print\x17("Hello")', "invalid non-printable character"
      )
      self._check_error(
          b"with(0,,):\n\x01", "invalid non-printable character"
      )
  
imports: import re
  import doctest
  import textwrap
  import unittest
  from test import support
label_desc: Use image node_id 31 for calling the SyntaxTestCase obj's underlying member method code with example usage: obj.test_invisible_characters() without return types