How to use the inflect.STDOUT_ON function in inflect

def test_millfn(self):
        p = inflect.engine()
        millfn = p.millfn
        self.assertEqual(millfn(1), ' thousand')
        self.assertEqual(millfn(2), ' million')
        self.assertEqual(millfn(3), ' billion')
        self.assertEqual(millfn(0), '')
        self.assertEqual(millfn(11), ' decillion')
        inflect.STDOUT_ON = False
        self.assertRaises(NumOutOfRangeError, millfn, 12)
        inflect.STDOUT_ON = True

self.assertEqual(numwords('120', group=2),
                         'twelve, zero')
        self.assertEqual(numwords('120', group=2, zero='oh', one='unity'),
                         'twelve, oh')
        # TODO: ignoring 'one' param with group=2
        self.TODO(numwords('101', group=2, zero='oh', one='unity'),
                  'ten, unity',
                  'ten, one')
        self.assertEqual(numwords('555_1202', group=1, zero='oh'),
                         'five, five, five, one, two, oh, two')
        self.assertEqual(numwords('555_1202', group=1, one='unity'),
                         'five, five, five, unity, two, zero, two')
        self.assertEqual(numwords('123.456', group=1, decimal='mark', one='one'),
                         'one, two, three, mark, four, five, six')

        inflect.STDOUT_ON = False
        self.assertRaises(BadChunkingOptionError,
                          numwords, '1234', group=4)
        inflect.STDOUT_ON = True

self.assertEqual(p.ud_match("studio", p.pl_sb_user_defined), "studii")

        p.defnoun("aviatrix", "aviatrices")
        self.assertEqual(p.plural("aviatrix"), "aviatrices")
        self.assertEqual(p.ud_match("aviatrix", p.pl_sb_user_defined), "aviatrices")
        p.defnoun("aviatrix", "aviatrixes")
        self.assertEqual(p.plural("aviatrix"), "aviatrixes")
        self.assertEqual(p.ud_match("aviatrix", p.pl_sb_user_defined), "aviatrixes")
        p.defnoun("aviatrix", None)
        self.assertEqual(p.plural("aviatrix"), "aviatrices")
        self.assertEqual(p.ud_match("aviatrix", p.pl_sb_user_defined), None)

        p.defnoun("(cat)", r"$1s")
        self.assertEqual(p.plural("cat"), "cats")

        inflect.STDOUT_ON = False
        self.assertRaises(inflect.BadUserDefinedPatternError, p.defnoun, "(??", None)
        inflect.STDOUT_ON = True

        p.defnoun(None, "")  # check None doesn't crash it

        # defverb
        p.defverb("will", "shall", "will", "will", "will", "will")
        self.assertEqual(p.ud_match("will", p.pl_v_user_defined), "will")
        self.assertEqual(p.plural("will"), "will")
        # TODO: will -> shall. Tests below fail
        self.TODO(p.compare("will", "shall"), "s:p")
        self.TODO(p.compare_verbs("will", "shall"), "s:p")

        # defadj
        p.defadj("hir", "their")
        self.assertEqual(p.plural("hir"), "their")

p.defnoun("aviatrix", "aviatrices")
        self.assertEqual(p.plural("aviatrix"), "aviatrices")
        self.assertEqual(p.ud_match("aviatrix", p.pl_sb_user_defined), "aviatrices")
        p.defnoun("aviatrix", "aviatrixes")
        self.assertEqual(p.plural("aviatrix"), "aviatrixes")
        self.assertEqual(p.ud_match("aviatrix", p.pl_sb_user_defined), "aviatrixes")
        p.defnoun("aviatrix", None)
        self.assertEqual(p.plural("aviatrix"), "aviatrices")
        self.assertEqual(p.ud_match("aviatrix", p.pl_sb_user_defined), None)

        p.defnoun("(cat)", r"$1s")
        self.assertEqual(p.plural("cat"), "cats")

        inflect.STDOUT_ON = False
        self.assertRaises(inflect.BadUserDefinedPatternError, p.defnoun, "(??", None)
        inflect.STDOUT_ON = True

        p.defnoun(None, "")  # check None doesn't crash it

        # defverb
        p.defverb("will", "shall", "will", "will", "will", "will")
        self.assertEqual(p.ud_match("will", p.pl_v_user_defined), "will")
        self.assertEqual(p.plural("will"), "will")
        # TODO: will -> shall. Tests below fail
        self.TODO(p.compare("will", "shall"), "s:p")
        self.TODO(p.compare_verbs("will", "shall"), "s:p")

        # defadj
        p.defadj("hir", "their")
        self.assertEqual(p.plural("hir"), "their")
        self.assertEqual(p.ud_match("hir", p.pl_adj_user_defined), "their")

def test_print(self):
        inflect.STDOUT_ON = True
        inflect.print3('') # make sure it doesn't crash
        inflect.STDOUT_ON = False

'twelve, oh')
        # TODO: ignoring 'one' param with group=2
        self.TODO(numwords('101', group=2, zero='oh', one='unity'),
                  'ten, unity',
                  'ten, one')
        self.assertEqual(numwords('555_1202', group=1, zero='oh'),
                         'five, five, five, one, two, oh, two')
        self.assertEqual(numwords('555_1202', group=1, one='unity'),
                         'five, five, five, unity, two, zero, two')
        self.assertEqual(numwords('123.456', group=1, decimal='mark', one='one'),
                         'one, two, three, mark, four, five, six')

        inflect.STDOUT_ON = False
        self.assertRaises(BadChunkingOptionError,
                          numwords, '1234', group=4)
        inflect.STDOUT_ON = True