Hi, testing 4.0.0 I'm getting the following error in with both python2 and python3 on x86_64 linux (LFS : gcc-7.2, python-2.7.13, python-3.6.2, with libxml2-2.9.4, libxslt-1.1.29 AND on another machine with libxml2-2.9.5, libxslt-1.1.30 with a fix so that xslt-config --cflags works again), both with linux-4.13.1. I will admit that I take a jaundiced view of testsuites, but now that I've read your page on building from source I see you want to know about failures ;) ERROR: test_xmlschema_parse_fixed_attributes (lxml.tests.test_xmlschema.ETreeXMLSchemaTestCase) ---------------------------------------------------------------------- Traceback (most recent call last): File "/usr/lib/python3.6/unittest/case.py", line 59, in testPartExecutor yield File "/usr/lib/python3.6/unittest/case.py", line 605, in run testMethod() File "/scratch/working/lxml-4.0.0/src/lxml/tests/test_xmlschema.py", line 217, in test_xmlschema_parse_fixed_attributes parser=parser) File "/scratch/working/lxml-4.0.0/src/lxml/tests/common_imports.py", line 164, in parse return etree.parse(f, parser=parser) File "src/lxml/etree.pyx", line 3441, in lxml.etree.parse doc = _parseDocument(source, parser, base_url) File "src/lxml/parser.pxi", line 1851, in lxml.etree._parseDocument return _parseMemoryDocument(source.getvalue(), url, parser) File "src/lxml/parser.pxi", line 1871, in lxml.etree._parseMemoryDocument c_doc = _parseDoc(text, url, parser) File "src/lxml/parser.pxi", line 1752, in lxml.etree._parseDoc return (<_BaseParser>parser)._parseUnicodeDoc(text, c_filename) File "src/lxml/parser.pxi", line 1066, in lxml.etree._BaseParser._parseUnicodeDoc return context._handleParseResultDoc(self, result, None) File "src/lxml/parser.pxi", line 598, in lxml.etree._ParserContext._handleParseResultDoc return _handleParseResult(self, self._c_ctxt, result, File "src/lxml/parser.pxi", line 709, in lxml.etree._handleParseResult _raiseParseError(c_ctxt, filename, context._error_log) File "src/lxml/parser.pxi", line 638, in lxml.etree._raiseParseError raise error_log._buildParseException( File "<string>", line 0 lxml.etree.XMLSyntaxError: Element 'b', attribute 'hardy': The value '(null)' does not match the fixed value constraint 'hey'. On one build on the 2.9.4/1.1.29 system I also got two other failures, which I cannot repeat (I ran it for real and logged it, testing before and after only ever showed the above 1 error in each). ERROR: test_etree_parse_io_error (lxml.tests.test_io.ETreeIOTestCase) ---------------------------------------------------------------------- Traceback (most recent call last): File "/usr/lib/python3.6/unittest/case.py", line 59, in testPartExecutor yield File "/usr/lib/python3.6/unittest/case.py", line 605, in run testMethod() File "/scratch/working/lxml-4.0.0/src/lxml/tests/test_io.py", line 276, in test_etree_parse_io_error dn = tempfile.mkdtemp(prefix=dirnameRU) File "/usr/lib/python3.6/tempfile.py", line 368, in mkdtemp _os.mkdir(file, 0o700) UnicodeEncodeError: 'ascii' codec can't encode characters in position 5-18: ordinal not in range(128) and ERROR: test_etree_parse_io_error (lxml.tests.test_io.ElementTreeIOTestCase) ---------------------------------------------------------------------- Traceback (most recent call last): File "/usr/lib/python3.6/unittest/case.py", line 59, in testPartExecutor yield File "/usr/lib/python3.6/unittest/case.py", line 605, in run testMethod() File "/scratch/working/lxml-4.0.0/src/lxml/tests/test_io.py", line 276, in test_etree_parse_io_error dn = tempfile.mkdtemp(prefix=dirnameRU) File "/usr/lib/python3.6/tempfile.py", line 368, in mkdtemp _os.mkdir(file, 0o700) UnicodeEncodeError: 'ascii' codec can't encode characters in position 5-18: ordinal not in range(128) and similar in 2.7 - unless I'm missing something, these 2 error reports are identical. To be clear, in that run python2 ran 1787 tests and reported FAILED (errors=3) while python3 ran 1800 tests with a similar count of errors. ĸen -- Truth, in front of her huge walk-in wardrobe, selected black leather boots with stiletto heels for such a barefaced truth. - Unseen Academicals