Barry A. Warsaw added the comment:
This just gets weirder. I've narrowed it down to running this command:
build-static/python Lib/test/regrtest.py test_doctest test_cpickle
fails every time. What's even weirder is that I hacked regrtest to print some
useful information before and after each test run. It prints the
id(sys.modules['copy_reg']) and len(dir(sys.modules['copy_reg']))). Here's the
output for two test runs. You can see that if test_doctest is run before
test_cpickle, regrtest sees a different module in sys.modules['copy_reg'], but
only *after* test_cpickle runs. Using test_doctest2 instead is fine.
I'll note one other thing. Doko mentioned that in our build environment,
cPickle is built in, not an extension.
# build-static/python Lib/test/regrtest.py test_doctest test_cpickle
[1/2] test_doctest
('BEFORE =====>', 140559940644712, 22)
('AFTER =====>', 140559940644712, 22)
[2/2] test_cpickle
('BEFORE =====>', 140559940644712, 22)
test test_cpickle failed -- multiple errors occurred; run in verbose mode for
details
('AFTER =====>', 140559897320928, 5)
1 test OK.
1 test failed:
test_cpickle
# build-static/python Lib/test/regrtest.py test_doctest2 test_cpickle
[1/2] test_doctest2
('BEFORE =====>', 139794866929512, 22)
('AFTER =====>', 139794866929512, 22)
[2/2] test_cpickle
('BEFORE =====>', 139794866929512, 22)
('AFTER =====>', 139794866929512, 22)
All 2 tests OK.
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<http://bugs.python.org/issue25698>
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