Re: Problem with pyXML DOM
Florian Lindner wrote: Traceback (most recent call last): File ConfigReader.py, line 40, in ? c = ConfigReader(f) File ConfigReader.py, line 32, in __init__ print sourceNode.getElementsByTagName(filename)[0].nodeValue() TypeError: 'NoneType' object is not callable This is because nodeValue here is 'None' and 'None()' doesn't make sense. Looks like you want the thing between filename and /filename. This is not a nodeValue, this is nodeValue of firstChild of element 'filename'. So this should work: print sourceNode.getElementsByTagName(filename)[0].firstChild.nodeValue -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with pyXML DOM
Maniac wrote: Florian Lindner wrote: Traceback (most recent call last): File ConfigReader.py, line 40, in ? c = ConfigReader(f) File ConfigReader.py, line 32, in __init__ print sourceNode.getElementsByTagName(filename)[0].nodeValue() TypeError: 'NoneType' object is not callable This is because nodeValue here is 'None' and 'None()' doesn't make sense. Looks like you want the thing between filename and /filename. This is not a nodeValue, this is nodeValue of firstChild of element 'filename'. So this should work: print sourceNode.getElementsByTagName(filename)[0].firstChild.nodeValue Ok, works perfect. Thanks! But I don't really understand the logic: given I have the node A filenamepath/filename A.firstChild.nodeValue == path How would the second child of A look like? (ok, None in this case) How would a XML fragment look like that has a second child? What would be the nodeValue of A? for me a child of a node is something like filename child1 / child2 / /filename Thanks, Florian -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with pyXML DOM
Florian Lindner wrote: But I don't really understand the logic: given I have the node A filenamepath/filename A.firstChild.nodeValue == path How would the second child of A look like? (ok, None in this case) Yes. It's actually required by DOM standard: NodeList (which is returned from getElementsByTagName) should return 'null' (None in Python) on unknown index: http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-844377136 How would a XML fragment look like that has a second child? Like this for example: filenamechild/child//filename or like this: filenameI'm a text child node ElementChildNode//filename What would be the nodeValue of A? It's not related to children. There are several types of nodes: documents, elements, text, comments, processing instructions (things in ??)... Their nodeValue depends on their nature. http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-844377136 for me a child of a node is something like filename child1 / child2 / /filename Almost :-). Here filename has actually 5 nodes: 1. text node '\n ' 2. element node 'child' 3. text node '\n ' 4. element node 'child' 5. text node '\n' In other words: in DOM whitespace counts. -- http://mail.python.org/mailman/listinfo/python-list
Problem with pyXML DOM
Hello, I'm using the PyXML Package. My XML document looks like that: visConf graph name=testgraph1 type=chart source type=CSV filename/home/florian/visualizer/testdata.csv/filename /source /graph /visConf print sourceNode.getElementsByTagName(filename)[0] print sourceNode.getElementsByTagName(filename)[0].nodeValue() gives: Element Node at b7af74ac: Name='filename' with 0 attributes and 1 children Traceback (most recent call last): File ConfigReader.py, line 40, in ? c = ConfigReader(f) File ConfigReader.py, line 32, in __init__ print sourceNode.getElementsByTagName(filename)[0].nodeValue() TypeError: 'NoneType' object is not callable Given only the first call everything seems fine, I have a Node object for the filename. But why does the second call fails? The documentationhttp://pyxml.sourceforge.net/topics/howto/node20.html says: nodeValue Value of this node. For some types of node, such as Text nodes, the value is a string containing a chunk of textual data; for others, such as Text, the value is just None. Which I don't really understand? What is differencee between the two text nodes?? Thanks, Florian -- http://mail.python.org/mailman/listinfo/python-list
