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osx Python 2.7 gives "E ValueError: bad marshal data (unknown type code)"

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I installed nupic and when I run the test I get the error E ValueError: bad marshal data (unknown type code). I am not sure what this error means. 

$ ./scripts/run_nupic_tests.py -u
    ============================= test session starts ==============================
platform darwin -- Python 2.7.10 -- pytest-2.5.1 -- /Users/magaga/.virtualenvs/nupic/bin/python
plugins: cov, xdist
collecting ... collected 7 items / 79 errors

tests/unit/nupic/data/utils_test.py:59: UtilsTest.testParseSdr PASSED
tests/unit/nupic/data/utils_test.py:65: UtilsTest.testParseStringList PASSED
tests/unit/nupic/data/utils_test.py:35: UtilsTest.testParseTimestamp PASSED
tests/unit/nupic/data/utils_test.py:62: UtilsTest.testSerializeSdr PASSED
tests/unit/nupic/data/utils_test.py:49: UtilsTest.testSerializeTimestamp PASSED
tests/unit/nupic/data/utils_test.py:54: UtilsTest.testSerializeTimestampNoMS PASSED
tests/unit/nupic/data/utils_test.py:71: UtilsTest.testStripList PASSED

==================================== ERRORS ====================================
_______________ ERROR collecting tests/unit/nupic/utils_test.py ________________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_ ERROR collecting tests/unit/nupic/algorithms/anomaly_likelihood_jeff_test.py _
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
___ ERROR collecting tests/unit/nupic/algorithms/anomaly_likelihood_test.py ____
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_________ ERROR collecting tests/unit/nupic/algorithms/anomaly_test.py _________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_________ ERROR collecting tests/unit/nupic/algorithms/cells4_test.py __________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
___ ERROR collecting tests/unit/nupic/algorithms/cla_classifier_diff_test.py ___
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_____ ERROR collecting tests/unit/nupic/algorithms/cla_classifier_test.py ______
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
___ ERROR collecting tests/unit/nupic/algorithms/fast_cla_classifier_test.py ___
tests/unit/nupic/algorithms/fast_cla_classifier_test.py:35: in <module>
    import cla_classifier_test
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_____ ERROR collecting tests/unit/nupic/algorithms/knn_classifier_test.py ______
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
______ ERROR collecting tests/unit/nupic/algorithms/nab_detector_test.py _______
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_______ ERROR collecting tests/unit/nupic/algorithms/sp_overlap_test.py ________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (digit out of range in long)
___________ ERROR collecting tests/unit/nupic/algorithms/svm_test.py ___________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_________ ERROR collecting tests/unit/nupic/algorithms/tp10x2_test.py __________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
__________ ERROR collecting tests/unit/nupic/data/aggregator_test.py ___________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
___________ ERROR collecting tests/unit/nupic/data/dictutils_test.py ___________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
___________ ERROR collecting tests/unit/nupic/data/fieldmeta_test.py ___________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
______ ERROR collecting tests/unit/nupic/data/file_record_stream_test.py _______
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
____________ ERROR collecting tests/unit/nupic/data/filters_test.py ____________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
________ ERROR collecting tests/unit/nupic/data/functionsource_test.py _________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_______ ERROR collecting tests/unit/nupic/data/inference_shifter_test.py _______
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_________ ERROR collecting tests/unit/nupic/data/record_stream_test.py _________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_____ ERROR collecting tests/unit/nupic/data/generators/anomalyzer_test.py _____
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
__ ERROR collecting tests/unit/nupic/data/generators/pattern_machine_test.py ___
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
__ ERROR collecting tests/unit/nupic/data/generators/sequence_machine_test.py __
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
______ ERROR collecting tests/unit/nupic/encoders/adaptivescalar_test.py _______
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_________ ERROR collecting tests/unit/nupic/encoders/category_test.py __________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
________ ERROR collecting tests/unit/nupic/encoders/coordinate_test.py _________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
___________ ERROR collecting tests/unit/nupic/encoders/date_test.py ____________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
___________ ERROR collecting tests/unit/nupic/encoders/delta_test.py ___________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
___ ERROR collecting tests/unit/nupic/encoders/geospatial_coordinate_test.py ___
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
__________ ERROR collecting tests/unit/nupic/encoders/logenc_test.py ___________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
___________ ERROR collecting tests/unit/nupic/encoders/multi_test.py ___________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
___ ERROR collecting tests/unit/nupic/encoders/pass_through_encoder_test.py ____
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_ ERROR collecting tests/unit/nupic/encoders/random_distributed_scalar_test.py _
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
__________ ERROR collecting tests/unit/nupic/encoders/scalar_test.py ___________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
________ ERROR collecting tests/unit/nupic/encoders/scalarspace_test.py ________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
________ ERROR collecting tests/unit/nupic/encoders/sdrcategory_test.py ________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
 ERROR collecting tests/unit/nupic/encoders/sparse_pass_through_encoder_test.py 
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
___________ ERROR collecting tests/unit/nupic/engine/network_test.py ___________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_______ ERROR collecting tests/unit/nupic/engine/syntactic_sugar_test.py _______
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
____ ERROR collecting tests/unit/nupic/engine/unified_py_parameter_test.py _____
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
 ERROR collecting tests/unit/nupic/frameworks/opf/clamodel_classifier_helper_test.py 
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
______ ERROR collecting tests/unit/nupic/frameworks/opf/clamodel_test.py _______
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_____ ERROR collecting tests/unit/nupic/frameworks/opf/opf_metrics_test.py _____
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
 ERROR collecting tests/unit/nupic/frameworks/opf/common_models/cluster_params_test.py 
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_______ ERROR collecting tests/unit/nupic/math/array_algorithms_test.py ________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
_________ ERROR collecting tests/unit/nupic/support/decorators_test.py _________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
________ ERROR collecting tests/unit/nupic/support/object_json_test.py _________
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
 ERROR collecting tests/unit/nupic/support/consoleprinter_test/consoleprinter_test.py 
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/py/_path/local.py:650: in pyimport
    __import__(modname)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:134: in find_module
    co = _read_pyc(fn_pypath, pyc)
/Users/magaga/.virtualenvs/nupic/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:311: in _read_pyc
    co = marshal.load(fp)
E   ValueError: bad marshal data (unknown type code)
===================== 7 passed, 79 error in 68.37 seconds ======================

I tried to reinstall python and everything but could not solve the issue.

python macos nupic
Original Q&A
1

There are 1 answers

0
Seán Hayes On

It means the tests are trying to use data that couldn't be deserialized. My guess is they stored some test data using the Python marshall library, which according to the docs generally shouldn't be used:

https://docs.python.org/2/library/marshal.html

If you’re serializing and de-serializing Python objects, use the pickle module instead – the performance is comparable, version independence is guaranteed, and pickle supports a substantially wider range of objects than marshal.

Chances are the test data was generated on a different platform or using a different Python version than you're using.

I would file a bug report on their project page.

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