code: def test_invalid_escape(self):
      s = '["abc\\y"]'
      msg = "escape"
      self.assertRaisesRegex(self.JSONDecodeError, msg, self.loads, s)
  
imports: import decimal
  from io import StringIO
  from collections import OrderedDict
  from test.test_json import PyTest, CTest
  from test import support
label_desc: Use image node_id 9 for calling the TestDecode obj's underlying member method code with example usage: obj.test_invalid_escape() without return types