Message283947
I doubt very very much that coverage.py is stealing stderr. Many many test suites would have this problem if that were true. More likely is that somehow __del__ is not being invoked when you need it to be.
I tried running the tests under coverage also, and did not see this behavior. I don't have a build tree of the latest code, but I ran it on 3.6.0. The tests passed both with and without coverage measurement (output below). I would like to understand why you are seeing the results you are.
$ mkvirtualenv -p python3.6 issue29048
Running virtualenv with interpreter /usr/local/bin/python3.6
Using base prefix '/usr/local/pythonz/pythons/CPython-3.6.0'
New python executable in issue29048/bin/python3.6
Also creating executable in issue29048/bin/python
Installing setuptools, pip, wheel...done.
Collecting pip
Using cached pip-9.0.1-py2.py3-none-any.whl
Collecting setuptools
Using cached setuptools-32.2.0-py2.py3-none-any.whl
Installing collected packages: pip, setuptools
Found existing installation: pip 7.1.2
Uninstalling pip-7.1.2:
Successfully uninstalled pip-7.1.2
Found existing installation: setuptools 18.2
Uninstalling setuptools-18.2:
Successfully uninstalled setuptools-18.2
Successfully installed pip-9.0.1 setuptools-32.2.0
(issue29048)$ pip install coverage
Collecting coverage
Installing collected packages: coverage
Successfully installed coverage-4.2
(issue29048)$ python3.6 -m test -v test_exceptions
== CPython 3.6.0 (default, Dec 23 2016, 07:11:25) [GCC 4.2.1 Compatible Apple LLVM 7.0.2 (clang-700.1.81)]
== Darwin-14.5.0-x86_64-i386-64bit little-endian
== hash algorithm: siphash24 64bit
== cwd: /private/var/folders/j2/gr3cj3jn63s5q8g3bjvw57hm0000gp/T/test_python_20266
== encodings: locale=UTF-8, FS=utf-8
Testing with flags: sys.flags(debug=0, inspect=0, interactive=0, optimize=0, dont_write_bytecode=0, no_user_site=0, no_site=0, ignore_environment=0, verbose=0, bytes_warning=0, quiet=0, hash_randomization=1, isolated=0)
Run tests sequentially
0:00:00 [1/1] test_exceptions
testAttributes (test.test_exceptions.ExceptionTests) ... ok
testChainingAttrs (test.test_exceptions.ExceptionTests) ... ok
testChainingDescriptors (test.test_exceptions.ExceptionTests) ... ok
testExceptionCleanupNames (test.test_exceptions.ExceptionTests) ... ok
testExceptionCleanupState (test.test_exceptions.ExceptionTests) ... ok
testInfiniteRecursion (test.test_exceptions.ExceptionTests) ... ok
testInvalidAttrs (test.test_exceptions.ExceptionTests) ... ok
testInvalidTraceback (test.test_exceptions.ExceptionTests) ... ok
testKeywordArgs (test.test_exceptions.ExceptionTests) ... ok
testNoneClearsTracebackAttr (test.test_exceptions.ExceptionTests) ... ok
testRaising (test.test_exceptions.ExceptionTests) ... ok
testSettingException (test.test_exceptions.ExceptionTests) ... ok
testSyntaxErrorMessage (test.test_exceptions.ExceptionTests) ... ok
testSyntaxErrorOffset (test.test_exceptions.ExceptionTests) ... ok
testWithTraceback (test.test_exceptions.ExceptionTests) ... ok
test_3114 (test.test_exceptions.ExceptionTests) ... ok
test_MemoryError (test.test_exceptions.ExceptionTests) ... ok
test_WindowsError (test.test_exceptions.ExceptionTests) ... ok
test_badisinstance (test.test_exceptions.ExceptionTests) ... ok
test_errno_ENOTDIR (test.test_exceptions.ExceptionTests) ... ok
test_exception_target_in_nested_scope (test.test_exceptions.ExceptionTests) ... ok
test_exception_with_doc (test.test_exceptions.ExceptionTests) ... ok
test_generator_close_cleanup_exc_state (test.test_exceptions.ExceptionTests) ... ok
test_generator_del_cleanup_exc_state (test.test_exceptions.ExceptionTests) ... ok
test_generator_doesnt_retain_old_exc (test.test_exceptions.ExceptionTests) ... ok
test_generator_finalizing_and_exc_info (test.test_exceptions.ExceptionTests) ... ok
test_generator_leaking (test.test_exceptions.ExceptionTests) ... ok
test_generator_leaking2 (test.test_exceptions.ExceptionTests) ... ok
test_generator_leaking3 (test.test_exceptions.ExceptionTests) ... ok
test_generator_leaking4 (test.test_exceptions.ExceptionTests) ... ok
test_generator_next_cleanup_exc_state (test.test_exceptions.ExceptionTests) ... ok
test_generator_send_cleanup_exc_state (test.test_exceptions.ExceptionTests) ... ok
test_generator_throw_cleanup_exc_state (test.test_exceptions.ExceptionTests) ... ok
test_memory_error_cleanup (test.test_exceptions.ExceptionTests) ... ok
test_recursion_error_cleanup (test.test_exceptions.ExceptionTests) ... ok
test_str (test.test_exceptions.ExceptionTests) ... ok
test_unhandled (test.test_exceptions.ExceptionTests) ... ok
test_unicode_change_attributes (test.test_exceptions.ExceptionTests) ... ok
test_unicode_errors_no_object (test.test_exceptions.ExceptionTests) ... ok
test_unraisable (test.test_exceptions.ExceptionTests) ... ok
test_windows_message (test.test_exceptions.ExceptionTests)
Should fill in unknown error code in Windows error message ... skipped 'test specific to Windows'
test_attributes (test.test_exceptions.ImportErrorTests) ... ok
test_non_str_argument (test.test_exceptions.ImportErrorTests) ... ok
----------------------------------------------------------------------
Ran 43 tests in 0.027s
OK (skipped=1)
1 test OK.
Total duration: 64 ms
Tests result: SUCCESS
(issue29048)$ python -m coverage run --pylib -m test -v test_exceptions
== CPython 3.6.0 (default, Dec 23 2016, 07:11:25) [GCC 4.2.1 Compatible Apple LLVM 7.0.2 (clang-700.1.81)]
== Darwin-14.5.0-x86_64-i386-64bit little-endian
== hash algorithm: siphash24 64bit
== cwd: /private/var/folders/j2/gr3cj3jn63s5q8g3bjvw57hm0000gp/T/test_python_20270
== encodings: locale=UTF-8, FS=utf-8
Testing with flags: sys.flags(debug=0, inspect=0, interactive=0, optimize=0, dont_write_bytecode=0, no_user_site=0, no_site=0, ignore_environment=0, verbose=0, bytes_warning=0, quiet=0, hash_randomization=1, isolated=0)
Run tests sequentially
0:00:00 [1/1] test_exceptions
testAttributes (test.test_exceptions.ExceptionTests) ... ok
testChainingAttrs (test.test_exceptions.ExceptionTests) ... ok
testChainingDescriptors (test.test_exceptions.ExceptionTests) ... ok
testExceptionCleanupNames (test.test_exceptions.ExceptionTests) ... ok
testExceptionCleanupState (test.test_exceptions.ExceptionTests) ... ok
testInfiniteRecursion (test.test_exceptions.ExceptionTests) ... ok
testInvalidAttrs (test.test_exceptions.ExceptionTests) ... ok
testInvalidTraceback (test.test_exceptions.ExceptionTests) ... ok
testKeywordArgs (test.test_exceptions.ExceptionTests) ... ok
testNoneClearsTracebackAttr (test.test_exceptions.ExceptionTests) ... ok
testRaising (test.test_exceptions.ExceptionTests) ... ok
testSettingException (test.test_exceptions.ExceptionTests) ... ok
testSyntaxErrorMessage (test.test_exceptions.ExceptionTests) ... ok
testSyntaxErrorOffset (test.test_exceptions.ExceptionTests) ... ok
testWithTraceback (test.test_exceptions.ExceptionTests) ... ok
test_3114 (test.test_exceptions.ExceptionTests) ... ok
test_MemoryError (test.test_exceptions.ExceptionTests) ... ok
test_WindowsError (test.test_exceptions.ExceptionTests) ... ok
test_badisinstance (test.test_exceptions.ExceptionTests) ... ok
test_errno_ENOTDIR (test.test_exceptions.ExceptionTests) ... ok
test_exception_target_in_nested_scope (test.test_exceptions.ExceptionTests) ... ok
test_exception_with_doc (test.test_exceptions.ExceptionTests) ... ok
test_generator_close_cleanup_exc_state (test.test_exceptions.ExceptionTests) ... ok
test_generator_del_cleanup_exc_state (test.test_exceptions.ExceptionTests) ... ok
test_generator_doesnt_retain_old_exc (test.test_exceptions.ExceptionTests) ... ok
test_generator_finalizing_and_exc_info (test.test_exceptions.ExceptionTests) ... ok
test_generator_leaking (test.test_exceptions.ExceptionTests) ... ok
test_generator_leaking2 (test.test_exceptions.ExceptionTests) ... ok
test_generator_leaking3 (test.test_exceptions.ExceptionTests) ... ok
test_generator_leaking4 (test.test_exceptions.ExceptionTests) ... ok
test_generator_next_cleanup_exc_state (test.test_exceptions.ExceptionTests) ... ok
test_generator_send_cleanup_exc_state (test.test_exceptions.ExceptionTests) ... ok
test_generator_throw_cleanup_exc_state (test.test_exceptions.ExceptionTests) ... ok
test_memory_error_cleanup (test.test_exceptions.ExceptionTests) ... ok
test_recursion_error_cleanup (test.test_exceptions.ExceptionTests) ... ok
test_str (test.test_exceptions.ExceptionTests) ... ok
test_unhandled (test.test_exceptions.ExceptionTests) ... ok
test_unicode_change_attributes (test.test_exceptions.ExceptionTests) ... ok
test_unicode_errors_no_object (test.test_exceptions.ExceptionTests) ... ok
test_unraisable (test.test_exceptions.ExceptionTests) ... ok
test_windows_message (test.test_exceptions.ExceptionTests)
Should fill in unknown error code in Windows error message ... skipped 'test specific to Windows'
test_attributes (test.test_exceptions.ImportErrorTests) ... ok
test_non_str_argument (test.test_exceptions.ImportErrorTests) ... ok
----------------------------------------------------------------------
Ran 43 tests in 0.036s
OK (skipped=1)
1 test OK.
Total duration: 95 ms
Tests result: SUCCESS
(issue29048)$ python -m coverage report
Name Stmts Miss Cover
--------------------------------------------------------------------------------------------------------------
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/_bootlocale.py 17 13 24%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/_collections_abc.py 562 546 3%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/_osx_support.py 210 161 23%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/_sysconfigdata_m_darwin_darwin.py 1 0 100%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/_weakrefset.py 146 109 25%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/abc.py 92 65 29%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/argparse.py 1187 757 36%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/base64.py 315 268 15%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/codecs.py 398 377 5%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/collections/__init__.py 677 650 4%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/contextlib.py 163 140 14%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/difflib.py 669 606 9%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/email/__init__.py 14 8 43%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/email/base64mime.py 40 26 35%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/email/charset.py 122 78 36%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/email/encoders.py 28 19 32%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/email/errors.py 37 7 81%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/email/header.py 310 258 17%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/email/quoprimime.py 115 83 28%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/encodings/__init__.py 76 43 43%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/encodings/latin_1.py 19 18 5%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/enum.py 438 248 43%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/functools.py 443 421 5%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/genericpath.py 72 50 31%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/gettext.py 389 323 17%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/gzip.py 349 298 15%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/importlib/__init__.py 99 96 3%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/importlib/_bootstrap.py 631 445 29%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/importlib/_bootstrap_external.py 711 528 26%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/importlib/util.py 147 140 5%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/ipaddress.py 904 597 34%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/linecache.py 102 55 46%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/locale.py 399 357 11%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/logging/__init__.py 769 521 32%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/logging/handlers.py 663 534 19%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/lzma.py 135 130 4%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/multiprocessing/process.py 163 162 1%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/nntplib.py 559 457 18%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/os.py 536 489 9%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/platform.py 580 466 20%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/posixpath.py 320 222 31%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/pprint.py 419 351 16%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/queue.py 111 76 32%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/quopri.py 168 150 11%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/random.py 346 329 5%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/re.py 153 125 18%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/shutil.py 619 600 3%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/socket.py 403 396 2%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/sre_compile.py 401 151 62%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/sre_parse.py 758 460 39%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/ssl.py 571 426 25%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/string.py 153 114 25%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/subprocess.py 794 671 15%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/sysconfig.py 376 246 35%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/tempfile.py 395 258 35%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/test/__init__.py 0 0 100%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/test/__main__.py 2 0 100%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/test/libregrtest/__init__.py 3 0 100%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/test/libregrtest/cmdline.py 127 52 59%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/test/libregrtest/main.py 335 163 51%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/test/libregrtest/refleak.py 186 122 34%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/test/libregrtest/runtest.py 146 62 58%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/test/libregrtest/save_env.py 189 68 64%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/test/libregrtest/setup.py 68 21 69%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/test/support/__init__.py 1289 902 30%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/test/test_exceptions.py 765 93 88%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/threading.py 575 572 1%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/tokenize.py 473 438 7%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/traceback.py 247 185 25%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/types.py 155 152 2%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/unittest/__init__.py 15 3 80%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/unittest/case.py 753 413 45%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/unittest/loader.py 295 226 23%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/unittest/main.py 149 122 18%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/unittest/result.py 128 66 48%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/unittest/runner.py 159 51 68%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/unittest/signals.py 47 33 30%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/unittest/suite.py 220 81 63%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/unittest/util.py 130 107 18%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/urllib/__init__.py 0 0 100%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/urllib/error.py 34 19 44%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/urllib/response.py 43 26 40%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/warnings.py 331 300 9%
/usr/local/pythonz/pythons/CPython-3.6.0/lib/python3.6/weakref.py 379 342 10%
--------------------------------------------------------------------------------------------------------------
TOTAL 26517 19743 26%
(issue29048)$ |
|
| Date |
User |
Action |
Args |
| 2016-12-24 12:51:08 | nedbat | set | recipients:
+ nedbat, r.david.murray, serhiy.storchaka, patriki |
| 2016-12-24 12:51:08 | nedbat | set | messageid: <1482583868.33.0.980139195786.issue29048@psf.upfronthosting.co.za> |
| 2016-12-24 12:51:08 | nedbat | link | issue29048 messages |
| 2016-12-24 12:51:06 | nedbat | create | |
|
➜
