code: def test_testmod(self):
      import doctest, sys
  
      EXPECTED = 19
      f, t = doctest.testmod(sys.modules[__name__])
      if f:
          self.fail("%d of %d doctests failed" % (f, t))
      if t != EXPECTED:
          self.fail("expected %d tests to run, not %d" % (EXPECTED, t))
  
file_path: cpython/Lib/test/test_doctest2.py
imports: import sys
  import unittest
  from doctest import *
label_desc: Use image node_id 1 for calling the Test obj's underlying member method code with example usage: obj.test_testmod() without return types