lxml - The Python XML Toolkit December 2018

lxml@python.org

3 participants
7 discussions

[lxml-dev] Reparenting a node
by Lawrence Oluyede 30 Jan '23

30 Jan '23

I have a doc A and a doc B, I'd like to put a node extracted from A in the document B but I always get a ValueError: ValueError: Element is not a child of this node. I didn't find any "setparent" in the API. How can I do this? -- Lawrence, oluyede.org - neropercaso.it "It is difficult to get a man to understand something when his salary depends on not understanding it" - Upton Sinclair

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[lxml-dev] Checking whether a node is a comment/element
by Geoffrey Sneddon 11 Jan '23

11 Jan '23

Hi, What's the best way to check whether a given node is a comment or an element? For the former, I'm currently using isinstance(node, etree._Comment), which is rather obviously sub-optimal. -- Geoffrey Sneddon <http://gsnedders.com/>

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[lxml-dev] lxml 2.0.5 released
by Stefan Behnel 11 Jan '23

11 Jan '23

Hi all, lxml 2.0.5 is on PyPI. This is a bug-fix-only release of the stable 2.0 series. Have fun, Stefan 2.0.5 (2008-05-01) Bugs fixed * Resolving to a filename in custom resolvers didn't work. * lxml did not honour libxslt's second error state "STOPPED", which let some XSLT errors pass silently. * Memory leak in Schematron with libxml2 >= 2.6.31.

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[lxml-dev] lxml has its page on launchpad
by Stefan Behnel 20 Sep '22

20 Sep '22

Hi all, I added the lxml project to launchpad, the Ubuntu Bug-Tracker. It also has a FAQ engine and a couple of other goodies. https://launchpad.net/lxml It's easy to sign up for launchpad, BTW, no 90%-footnotes-contract. Have fun, Stefan

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[lxml-dev] Building LXML Trunk
by Sidnei da Silva 30 Aug '22

30 Aug '22

Hi, I've tried to build lxml from trunk today, on Win32. Got the following error: src\lxml\etree.c(880) : error C2059: syntax error : ')' src\lxml\etree.c(881) : error C2059: syntax error : ')' src\lxml\etree.c(882) : error C2059: syntax error : ')' src\lxml\etree.c(883) : error C2059: syntax error : ')' Any clue? Smells like a Pyrex issue? -- Sidnei da Silva Enfold Systems http://enfoldsystems.com Fax +1 832 201 8856 Office +1 713 942 2377 Ext 214

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Understanding exception raised in tests
by Charlie Clark 07 Dec '18

07 Dec '18

Hi, I've recently started seeing this in some of my tests: xception ignored in: <generator object WorksheetWriter.get_stream at 0x11aef6138> Traceback (most recent call last): File "/Users/charlieclark/Projects/openpyxl/openpyxl/worksheet/_writer.py", line 296, in get_stream pass File "src/lxml/serializer.pxi", line 1400, in lxml.etree._FileWriterElement.__exit__ File "src/lxml/serializer.pxi", line 1136, in lxml.etree._IncrementalFileWriter._write_end_element lxml.etree.LxmlSyntaxError: inconsistent exit action in context manager Exception ignored in: <generator object WriteOnlyWorksheet._write_rows at 0x11aef61b0> Traceback (most recent call last): File "/Users/charlieclark/Projects/openpyxl/openpyxl/worksheet/write_only.py", line 115, in _write_rows pass File "src/lxml/serializer.pxi", line 1400, in lxml.etree._FileWriterElement.__exit__ File "src/lxml/serializer.pxi", line 1134, in lxml.etree._IncrementalFileWriter._write_end_element lxml.etree.LxmlSyntaxError: not in an element The relevant method looks like this: def _write_rows(self): """ Send rows to the writer's stream """ try: xf = self._writer.xf.send(True) except StopIteration: self._already_saved() with xf.element("sheetData"): row_idx = 1 try: while True: row = (yield) row = self._values_to_row(row, row_idx) self._writer.write_row(xf, row, row_idx) row_idx += 1 except GeneratorExit: pass self._writer.xf.send(None) I think the exception is coming from some cleanup when the test has run but the context manager hasn't exited. But I'm not sure of the details. Outside tests the context manager will always be closed so I don't think this is critical but I would like to fix it. Going by the exception I guess I should handle GeneratorExit differently but I'm afraid I don't understand the Python internals here so well! Charlie -- Charlie Clark Managing Director Clark Consulting & Research German Office Kronenstr. 27a Düsseldorf D- 40217 Tel: +49-211-600-3657 Mobile: +49-178-782-6226

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bug or feature: remove element doesn't work
by Martin Mueller 06 Dec '18

06 Dec '18

When I remove an element I usually append it to a list called “garbage” and then use parent= element.getparent() parent.remove(element) This doesn’t work if the element is empty. It produces an error message saying that there is no parent. If I add some arbitrary child element to the element I want to remove, it works. If I load the XML document in oXygen and select the empty element, it will give me its correct path. So the empty element as a parent. Is this a quirk or am I doing something wrong?

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lxml - The Python XML Toolkit December 2018