docstr: The Python 3.0 port of the module didn't cope with values of subclasses of str.
code: def test_str_subclass(self):
      """
      The Python 3.0 port of the module didn't cope with values of subclasses of str.
      """
  
      class MyStr(str):
          pass
  
      self.con.execute("select ?", (MyStr("abc"),))
  
imports: import datetime
  import unittest
  import sqlite3
  import weakref
  import functools
  from test import support
  from unittest.mock import patch
  from .util import memory_database, cx_limit
  from .util import MemoryDatabaseMixin
label_desc: Use image node_id 15 for calling the RegressionTests obj's underlying member method code with example usage: obj.test_str_subclass() without return types