AttributeError: 'MyOptionParser' object has no attribute 'parse_known_args'

[pytestbot]

Originally reported by: Damien Nozay (BitBucket: dnozay, GitHub: dnozay)

---

IMHO this is a regression

python 2.6.1 + pytest < 2.4.0 works

python 2.6.1 + pytest 2.4.0 =

#!python


Generating XML reports...
Traceback (most recent call last):
  File "/home/damien/test-venv/bin/py.test", line 8, in <module>
    load_entry_point('pytest==2.4.0', 'console_scripts', 'py.test')()
  File "/home/damien/test-venv/lib/python2.6/site-packages/_pytest/config.py", line 18, in main
    config = _prepareconfig(args, plugins)
  File "/home/damien/test-venv/lib/python2.6/site-packages/_pytest/config.py", line 63, in _prepareconfig
    pluginmanager=pluginmanager, args=args)
  File "/home/damien/test-venv/lib/python2.6/site-packages/_pytest/core.py", line 364, in __call__
    return self._docall(methods, kwargs)
  File "/home/damien/test-venv/lib/python2.6/site-packages/_pytest/core.py", line 375, in _docall
    res = mc.execute()
  File "/home/damien/test-venv/lib/python2.6/site-packages/_pytest/core.py", line 293, in execute
    res = method(**kwargs)
  File "/home/damien/test-venv/lib/python2.6/site-packages/_pytest/helpconfig.py", line 25, in pytest_cmdline_parse
    config = __multicall__.execute()
  File "/home/damien/test-venv/lib/python2.6/site-packages/_pytest/core.py", line 293, in execute
    res = method(**kwargs)
  File "/home/damien/test-venv/lib/python2.6/site-packages/_pytest/config.py", line 618, in pytest_cmdline_parse
    self.parse(args)
  File "/home/damien/test-venv/lib/python2.6/site-packages/_pytest/config.py", line 711, in parse
    self._preparse(args)
  File "/home/damien/test-venv/lib/python2.6/site-packages/_pytest/config.py", line 691, in _preparse
    args=args, parser=self._parser)
  File "/home/damien/test-venv/lib/python2.6/site-packages/_pytest/core.py", line 364, in __call__
    return self._docall(methods, kwargs)
  File "/home/damien/test-venv/lib/python2.6/site-packages/_pytest/core.py", line 375, in _docall
    res = mc.execute()
  File "/home/damien/test-venv/lib/python2.6/site-packages/_pytest/core.py", line 293, in execute
    res = method(**kwargs)
  File "/home/damien/test-venv/lib/python2.6/site-packages/_pytest/capture.py", line 17, in pytest_load_initial_conftests
    ns = parser.parse_known_args(args)
  File "/home/damien/test-venv/lib/python2.6/site-packages/_pytest/config.py", line 175, in parse_known_args
    return optparser.parse_known_args(args)[0]
AttributeError: 'MyOptionParser' object has no attribute 'parse_known_args'

---

• Bitbucket: https://bitbucket.org/pytest-dev/pytest/issue/362

[pytestbot]

Original comment by Damien Nozay (BitBucket: dnozay, GitHub: dnozay):

---

parse_known_args is available with argparse which is not present by default with python 2.6.1; which itself ships with optparse.

[pytestbot]

Original comment by holger krekel (BitBucket: hpk42, GitHub: hpk42):

---

Not sure how you get this problem. pytest should pull in argparse as a package when installing. (version 1.2.1). Does it not in your python2.6 environment? With my python2.6.8 and installing pytest i don't get this problem.

[pytestbot]

Original comment by Damien Nozay (BitBucket: dnozay, GitHub: dnozay):

---

here is my test:

#!bash

#!/bin/bash
set +e
set +x

/opt/python-2.6.1/bin/virtualenv test-env
source test-env/bin/activate
pip install unittest-xml-reporting
pip install unittest2
pip install nose
pip install argparse
pip install "pytest == 2.4.0"


python --version

cat > tests.py << EOF
import random
try:
    import unittest2 as unittest
except ImportError:
    import unittest
import xmlrunner
import argparse

class TestSequenceFunctions(unittest.TestCase):

    def setUp(self):
        self.seq = list(range(10))

    @unittest.skip("demonstrating skipping")
    def test_skipped(self):
        self.fail("shouldn't happen")

    def test_shuffle(self):
        # make sure the shuffled sequence does not lose any elements
        random.shuffle(self.seq)
        self.seq.sort()
        self.assertEqual(self.seq, list(range(10)))

        # should raise an exception for an immutable sequence
        self.assertRaises(TypeError, random.shuffle, (1,2,3))

    def test_choice(self):
        element = random.choice(self.seq)
        self.assertTrue(element in self.seq)

    def test_sample(self):
        with self.assertRaises(ValueError):
            random.sample(self.seq, 20)
        for element in random.sample(self.seq, 5):
            self.assertTrue(element in self.seq)

if __name__ == '__main__':
    unittest.main(testRunner=xmlrunner.XMLTestRunner(output='test-reports'))


EOF

python tests.py
py.test  --junitxml=results.xml
nosetests --with-xunit




set

[pytestbot]

Original comment by holger krekel (BitBucket: hpk42, GitHub: hpk42):

---

i don't get an AttributeError but a ValueError. The latter should be fixed, though, on trunk. You can install it via::

pip install -i http://devpi.net/hpk/dev/+simple/ -U pytest

(should give you pytest-2.4.1.dev1). Chances are you still get an AttributeError. Please let me know.

[pytestbot]

Original comment by Damien Nozay (BitBucket: dnozay, GitHub: dnozay):

---

#!bash

Generating XML reports...
============================= test session starts ==============================
platform linux2 -- Python 2.6.1 -- pytest-2.4.1.dev1
collected 4 items

tests.py ...s

 generated xml file: /home/damien/results.xml 
===================== 3 passed, 1 skipped in 0.08 seconds ======================

this seems to work.
thank you.

[pytestbot]

Original comment by holger krekel (BitBucket: hpk42, GitHub: hpk42):

---

resolved with pytest-2.4.1 release.