[Docutils-develop] [ docutils-Bugs-3555164 ] odf writer fails when run with Python3.3b1

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Bugs item #3555164, was opened at 2012-08-07 12:32
Message generated for change (Comment added) made by mandriver
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: David Malcolm ()
Assigned to: Nobody/Anonymous (nobody)
Summary: odf writer fails when run with Python3.3b1

Initial Comment:
A few of the tests in test_writers.test_odt.DocutilsOdtTestCase fail when run against Python 3.3b1, with tracebacks of the form:

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ERROR: test_odt_basic (test_writers.test_odt.DocutilsOdtTestCase)
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Traceback (most recent call last):
  File "/home/david/coding/python3.3/python-docutils/python3-python-docutils-0.10-0.2.20120730svn7490.fc18/test3/test_writers/test_odt.py", line 151, in test_odt_basic
    self.process_test('odt_basic.txt', 'odt_basic.odt',
  File "/home/david/coding/python3.3/python-docutils/python3-python-docutils-0.10-0.2.20120730svn7490.fc18/test3/test_writers/test_odt.py", line 104, in process_test
    settings_overrides=settings_overrides)
  File "/home/david/coding/python3.3/python-docutils/python3-python-docutils-0.10-0.2.20120730svn7490.fc18/build/lib/docutils/core.py", line 414, in publish_string
    enable_exit_status=enable_exit_status)
  File "/home/david/coding/python3.3/python-docutils/python3-python-docutils-0.10-0.2.20120730svn7490.fc18/build/lib/docutils/core.py", line 662, in publish_programmatically
    output = pub.publish(enable_exit_status=enable_exit_status)
  File "/home/david/coding/python3.3/python-docutils/python3-python-docutils-0.10-0.2.20120730svn7490.fc18/build/lib/docutils/core.py", line 219, in publish
    output = self.writer.write(self.document, self.destination)
  File "/home/david/coding/python3.3/python-docutils/python3-python-docutils-0.10-0.2.20120730svn7490.fc18/build/lib/docutils/writers/__init__.py", line 80, in write
    self.translate()
  File "/home/david/coding/python3.3/python-docutils/python3-python-docutils-0.10-0.2.20120730svn7490.fc18/build/lib/docutils/writers/odf_odt/__init__.py", line 548, in translate
    self.visitor = self.translator_class(self.document)
  File "/home/david/coding/python3.3/python-docutils/python3-python-docutils-0.10-0.2.20120730svn7490.fc18/build/lib/docutils/writers/odf_odt/__init__.py", line 822, in __init__
    SubElement(root, 'office:scripts')
  File "/home/david/coding/python3.3/python-docutils/python3-python-docutils-0.10-0.2.20120730svn7490.fc18/build/lib/docutils/writers/odf_odt/__init__.py", line 287, in SubElement
    parent.append(el)
  File "/usr/lib64/python3.3/xml/etree/ElementTree.py", line 280, in append
    self._assert_is_element(element)
  File "/usr/lib64/python3.3/xml/etree/ElementTree.py", line 305, in _assert_is_element
    raise TypeError('expected an Element, not %s' % type(e).__name__)
TypeError: expected an Element, not _ElementInterfaceWrapper


These assertions are due to type-checking that was added in Python 3.3 to xml.etree - this was http://bugs.python.org/issue13782 ("xml.etree.ElementTree: Element.append doesn't type-check its argument").

What I think is happening is that _ElementInterfaceWrapper is a subclass of the Element class defined in xml/etree/ElementTree.py, but that file later has this code:
  # Import the C accelerators
  try:
      # Element, SubElement, ParseError, TreeBuilder, XMLParser
      from _elementtree import *
  except ImportError:
      pass
which happens after _ElementInterfaceWrapper has been set; hence that type-checking is expecting Element to be a _elementree.Element, rather than the pure-python Element implementation.


----------------------------------------------------------------------

Comment By: Dmitry Shachnev (mandriver)
Date: 2012-11-02 07:17

Message:
This should be now fixed with
http://hg.python.org/cpython/rev/7bd9626d8b4f.

----------------------------------------------------------------------

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