lxml - The Python XML Toolkit May 2015

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12 discussions

setting XML_CATALOG_FILES
by Tom Kralidis 10 May '15

10 May '15

Hi: using lxml 3.3.5 our project is implementing XML catalogs. On initial testing it appears that the XML_CATALOG_FILES environment variable needs to be set before lxml is imported, i.e.: # e.g. 1: works import os os.environ['XML_CATALOG_FILES'] = '/tmp/catalog.xml' from lxml import etree ... # validate XML schema = etree.XMLSchema(file=myschema) parser = etree.XMLParser(schema=schema) doc = etree.fromstring(postdata, parser) # e.g. 2: does not work import os from lxml import etree ... os.environ['XML_CATALOG_FILES'] = '/tmp/catalog.xml' ... # validate XML schema = etree.XMLSchema(file=myschema) parser = etree.XMLParser(schema=schema) doc = etree.fromstring(postdata, parser) Is there any way for lxml to realize XML_CATALOG_FILES after being imported? Thanks ..Tom

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tree.getpath() on xml with default namespace (no prefix)
by Aaron Storm 01 May '15

01 May '15

Having an issue with an xml file that has a namespace, but no prefix. The result of getpath() is showing as '*'Is there a workaround? I must be missing something very basic, but the documentation for getpath() doesn't mention what need to be done in this case (http://lxml.de/xpathxslt.html#generating-xpath-expressions) ##getpath.pyfrom lxml import etreeimport sys xml_file = sys.argv[1]parser = etree.XMLParser(remove_blank_text=True)tree = etree.parse(xml_file, parser)root = tree.getroot() for child in root.iter(): print(tree.getpath(child)) ##test1.xml -- with xmlns, but no prefix -- the result is not what I'm expecting<Test xmlns="http://www.test.org/test"> <elem>some text</elem></Test> $ python getpath.py test1.xml/*/*/* ##test2.xml -- without xmlns -- showing the expected results<Test> <elem>some text</elem></Test> $ python getpath.py test2.xml/Test/Test/elem ##test3.xml -- xmlns with prefix -- working as expected<ns:Test xmlns:ns="http://www.test.org/test"> <ns:elem>some text</ns:elem></ns:Test> $ python getpath.py test3.xml /ns:Test/ns:Test/ns:elem Cheers,Aaron

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