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Two failures in test_importlib:
======================================================================
FAIL: test_case_insensitivity 
(importlib.test.extension.test_case_sensitivity.ExtensionModuleCaseSensi
tivityTest)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Downloads/Python-
3.1a1/Lib/importlib/test/extension/test_case_sensitivity.py", line 29, 
in test_case_insensitivity
 self.assert_(hasattr(loader, 'load_module'))
AssertionError: None
======================================================================
FAIL: test_insensitive 
(importlib.test.source.test_case_sensitivity.CaseSensitivityTest)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Downloads/Python-
3.1a1/Lib/importlib/test/source/test_case_sensitivity.py", line 49, in 
test_insensitive
 self.assert_(hasattr(insensitive, 'load_module'))
AssertionError: None
----------------------------------------------------------------------

Is your version of OS X installed on a case-sensitive filesystem? These
tests all pass for me on my Macbook on 10.5.6.

Yes its case sensitive.

Ah, OK, that explains it then. I guess I need to come up with a test to
verify whether commonly case-sensitive filesystems are truly
case-sensitive before running the tests.
Thanks for the quick response, Ismail.

Fixed in r71042.

If you could, Ismail, can you verify this either from svn or when the
next release of 3.1 comes out and update this issue?

Sure thing, I am waiting for alpha2.
Regards.

Still fails with 3.1 alpha2:
======================================================================
ERROR: test_is_package 
(importlib.test.frozen.test_loader.InspectLoaderTests)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/frozen/test_loader.py", line 80, in 
test_is_package
 result = machinery.FrozenImporter.is_package(name)
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/_bootstrap.py", line 191, in wrapper
 return fxn(self, fullname)
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/_bootstrap.py", line 301, in is_package
 return imp.is_frozen_package(fullname)
AttributeError: 'module' object has no attribute 'is_frozen_package'
======================================================================
ERROR: test_lacking_parent 
(importlib.test.source.test_abc_loader.PyLoaderTests)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 162, in 
test_lacking_parent
 __loader__=mock)
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 128, in 
eq_attrs
 "{} attribute: {} != {}".format(attr, found, val))
ValueError: zero length field name in format
======================================================================
ERROR: test_module (importlib.test.source.test_abc_loader.PyLoaderTests)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 138, in 
test_module
 __loader__=mock)
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 128, in 
eq_attrs
 "{} attribute: {} != {}".format(attr, found, val))
ValueError: zero length field name in format
======================================================================
ERROR: test_package 
(importlib.test.source.test_abc_loader.PyLoaderTests)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 151, in 
test_package
 __loader__=mock)
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 128, in 
eq_attrs
 "{} attribute: {} != {}".format(attr, found, val))
ValueError: zero length field name in format
======================================================================
ERROR: test_lacking_parent 
(importlib.test.source.test_abc_loader.PyPycLoaderTests)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 270, in 
test_lacking_parent
 mock, name = super().test_lacking_parent()
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 162, in 
test_lacking_parent
 __loader__=mock)
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 128, in 
eq_attrs
 "{} attribute: {} != {}".format(attr, found, val))
ValueError: zero length field name in format
======================================================================
ERROR: test_module 
(importlib.test.source.test_abc_loader.PyPycLoaderTests)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 262, in 
test_module
 mock, name = super().test_module()
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 138, in 
test_module
 __loader__=mock)
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 128, in 
eq_attrs
 "{} attribute: {} != {}".format(attr, found, val))
ValueError: zero length field name in format
======================================================================
ERROR: test_package 
(importlib.test.source.test_abc_loader.PyPycLoaderTests)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 266, in 
test_package
 mock, name = super().test_package()
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 151, in 
test_package
 __loader__=mock)
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 128, in 
eq_attrs
 "{} attribute: {} != {}".format(attr, found, val))
ValueError: zero length field name in format
======================================================================
FAIL: test_case_insensitivity 
(importlib.test.extension.test_case_sensitivity.ExtensionModuleCaseSensi
tivityTest)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/extension/test_case_sensitivity.py", line 29, 
in test_case_insensitivity
 self.assert_(hasattr(loader, 'load_module'))
AssertionError: False is not True
======================================================================
FAIL: test_module_reuse 
(importlib.test.source.test_abc_loader.PyPycLoaderTests)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 275, in 
test_module_reuse
 self.verify_bytecode(mock, name)
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/util.py", line 18, in wrapper
 to_return = fxn(*args, **kwargs)
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_abc_loader.py", line 253, in 
verify_bytecode
 self.assert_(name in mock.module_bytecode)
AssertionError: False is not True
======================================================================
FAIL: test_insensitive 
(importlib.test.source.test_case_sensitivity.CaseSensitivityTest)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Downloads/Python-
3.1a2/Lib/importlib/test/source/test_case_sensitivity.py", line 49, in 
test_insensitive
 self.assert_(hasattr(insensitive, 'load_module'))
AssertionError: False is not True

Something is wrong with your build, Ismail, because most of those
failures are because of things that were added between alpha1 and alpha2.
But to speed this up, can you tell me what the file I attached to the
issue prints out?

[~]> python3.1 tester.py
original name: .CFUserTextEncoding
changed name: .CFUSERTEXTENCODING
case-sensitive
I'll do a rebuild just in case. Thanks.

Fails in beta1.

Bloody OS X and its default case-insensitivity.
Ismail, please try the attached patch to double-check this solves the
issue ASAP so this doesn't hold up Python 3.1 rc1.

Tested with: ./python -m test.regrtest -v test_importlib
3 failures:
======================================================================
FAIL: test_case_insensitivity 
(importlib.test.extension.test_case_sensitivity.ExtensionModuleCaseSensi
tivityTest)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Python-
3.1b1/Lib/importlib/test/extension/test_case_sensitivity.py", line 29, 
in test_case_insensitivity
 self.assert_(hasattr(loader, 'load_module'))
AssertionError: False is not True
======================================================================
FAIL: test_lacking_parent 
(importlib.test.source.test_abc_loader.PyPycLoaderTests)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Python-
3.1b1/Lib/importlib/test/source/test_abc_loader.py", line 271, in 
test_lacking_parent
 self.verify_bytecode(mock, name)
 File "/Users/cartman/Python-3.1b1/Lib/importlib/test/source/util.py", 
line 18, in wrapper
 to_return = fxn(*args, **kwargs)
 File "/Users/cartman/Python-
3.1b1/Lib/importlib/test/source/test_abc_loader.py", line 253, in 
verify_bytecode
 self.assert_(name in mock.module_bytecode)
AssertionError: False is not True
======================================================================
FAIL: test_insensitive 
(importlib.test.source.test_case_sensitivity.CaseSensitivityTest)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Python-
3.1b1/Lib/importlib/test/source/test_case_sensitivity.py", line 49, in 
test_insensitive
 self.assert_(hasattr(insensitive, 'load_module'))
AssertionError: False is not True
----------------------------------------------------------------------
Ran 166 tests in 0.133s
FAILED (failures=3)

Damn, that patch should have caused those case-sensitivity tests to be
skipped. I will dig into this later today and hopefully have another
patch to test some time tonight.

OK, Ismail, here is another patch. Revert the last one and try this.
Looks like I was being stupid by forgetting to remove the 'darwin'
platform check. But I also made the check simpler.

Down to 1 failure:
FAILED (failures=1)
test test_importlib failed -- Traceback (most recent call last):
 File "/Users/cartman/Python-
3.1b1/Lib/importlib/test/source/test_abc_loader.py", line 271, in 
test_lacking_parent
 self.verify_bytecode(mock, name)
 File "/Users/cartman/Python-3.1b1/Lib/importlib/test/source/util.py", 
line 18, in wrapper
 to_return = fxn(*args, **kwargs)
 File "/Users/cartman/Python-
3.1b1/Lib/importlib/test/source/test_abc_loader.py", line 253, in 
verify_bytecode
 self.assertIn(name, mock.module_bytecode)
AssertionError: 'pkg.mod' not found in {}

Thanks for the quick reply, Ismail! I will look into the last failure
this weekend, but off the top of my head I am not sure why that test
would be failing since everything to do with that test should be a mock
and thus not touching the file system.

OK, here is an attempt to fix this. My guess is it has something to do
with sys.dont_write_bytecode, otherwise I cannot understand why you fail
and not someone else since no other case-sensitive systems have reported
this failure.

1 Fail:
test test_importlib crashed -- <class 'AttributeError'>: 'module' object 
has no attribute 'writes_bytecode'
Traceback (most recent call last):
 File "/Users/cartman/Python-3.1b1/Lib/test/regrtest.py", line 620, in 
runtest_inner
 indirect_test()
 File "/Users/cartman/Python-3.1b1/Lib/test/test_importlib.py", line 6, 
in test_main
 run_unittest(importlib.test.test_suite('importlib.test'))
 File "/Users/cartman/Python-3.1b1/Lib/importlib/test/__init__.py", 
line 22, in test_suite
 package_tests = getattr(sys.modules[package_name], 'test_suite')()
 File "/Users/cartman/Python-
3.1b1/Lib/importlib/test/source/__init__.py", line 8, in test_suite
 return importlib.test.test_suite('importlib.test.source', directory)
 File "/Users/cartman/Python-3.1b1/Lib/importlib/test/__init__.py", 
line 16, in test_suite
 __import__(module_name, level=0)
 File "/Users/cartman/Python-
3.1b1/Lib/importlib/test/source/test_file_loader.py", line 111, in 
<module>
 class BadBytecodeTest(unittest.TestCase):
 File "/Users/cartman/Python-
3.1b1/Lib/importlib/test/source/test_file_loader.py", line 130, in 
BadBytecodeTest
 @source_util.writes_bytecode
AttributeError: 'module' object has no attribute 'writes_bytecode'
1 test failed:
 test_importlib

Bah, I screwed up and left a file out of skip_bytecode_writing.diff. If
you apply test_file_loader along with that patch that should fix the error.

Applied skip_bytecode.diff and test_file_loader.diff clean build 
results in:
======================================================================
FAIL: test_case_insensitivity 
(importlib.test.extension.test_case_sensitivity.ExtensionModuleCaseSensi
tivityTest)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Python-
3.1b1/Lib/importlib/test/extension/test_case_sensitivity.py", line 29, 
in test_case_insensitivity
 self.assert_(hasattr(loader, 'load_module'))
AssertionError: False is not True
======================================================================
FAIL: test_insensitive 
(importlib.test.source.test_case_sensitivity.CaseSensitivityTest)
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/Users/cartman/Python-
3.1b1/Lib/importlib/test/source/test_case_sensitivity.py", line 49, in 
test_insensitive
 self.assert_(hasattr(insensitive, 'load_module'))
AssertionError: False is not True
----------------------------------------------------------------------
Ran 166 tests in 0.124s
FAILED (failures=2)
test test_importlib failed -- errors occurred; run in verbose mode for 
details

OK, that means everything is fixed as case_sensitivity_tests.diff fixes
those test errors.
Committed in r72559.