Hi. I'm new to Python and trying to use it to solve a specific problem. I have an XML file in which I need to locate a specific text node and replace the contents with some other text. The text in question is actually about 70k of base64 encoded data.
I wrote some code that works on my Linux box using xml.dom.minidom, but it will not run on the windows box that I really need it on. Python 2.5.1 on both. On the windows machine, it's a clean install of the Python .msi from python.org. The linux box is Ubuntu 7.10, which has some Python XML packages installed which can't easily be removed (namely python-libxml2 and python-xml). I have boiled the code down to its simplest form which shows the problem:- import xml.dom.minidom import sys input_file = sys.argv[1]; output_file = sys.argv[2]; doc = xml.dom.minidom.parse(input_file) file = open(output_file, "w") doc.writexml(file) The error is:- $ python test2.py input2.xml output.xml Traceback (most recent call last): File "test2.py", line 9, in <module> doc.writexml(file) File "c:\Python25\lib\xml\dom\minidom.py", line 1744, in writexml node.writexml(writer, indent, addindent, newl) File "c:\Python25\lib\xml\dom\minidom.py", line 814, in writexml node.writexml(writer,indent+addindent,addindent,newl) File "c:\Python25\lib\xml\dom\minidom.py", line 809, in writexml _write_data(writer, attrs[a_name].value) File "c:\Python25\lib\xml\dom\minidom.py", line 299, in _write_data data = data.replace("&", "&").replace("<", "<") AttributeError: 'NoneType' object has no attribute 'replace' As I said, this code runs fine on the Ubuntu box. If I could work out why the code runs on this box, that would help because then I call set up the windows box the same way. The input file contains an <xsd:schema> block which is what actually causes the problem. If you remove that node and subnodes, it works fine. For a while at least, you can view the input file at http://rafb.net/p/5R1JlW12.html Someone suggested that I should try xml.etree.ElementTree, however writing the same type of simple code to import and then write the file mangles the xsd:schema stuff because ElementTree does not understand namespaces. By the way, is pyxml a live project or not? Should it still be used? It's odd that if you go to http://www.python.org/ and click the link "Using python for..." XML, it leads you to http://pyxml.sourceforge.net/topics/ If you then follow the download links to http://sourceforge.net/project/showfiles.php?group_id=6473 you see that the latest file is 2004, and there are no versions for newer pythons. It also says "PyXML is no longer maintained". Shouldn't the link be removed from python.org? Thanks in advance! -- http://mail.python.org/mailman/listinfo/python-list