Das deutsche Python-Forum

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<?xml version="1.0"?>
<!-- ctOPCServer configuration file -->
<OPCServer>
	<MinPollRate>60000</MinPollRate>
	<AlarmServer>
		<DatabaseFileAndPath>c:\programs\centro\cmi\proto\wsl.mdb</DatabaseFileAndPath>
	</AlarmServer>
	<WSL6>
		<EquipmentId>Q4POCA-L</EquipmentId>
	</WSL6>
	<CESAR>
		<Name>Q4POCA-1</Name>
		<Namespace>
			<Entry>
				<Device>Boot</Device>
				<Unit>Geschw</Unit>
				<Parameter Vartype="VT_R4">AbTol</Parameter>
			</Entry>
			<Entry>
				<Device>Boot</Device>
				<Unit>Geschw</Unit>
				<Parameter Vartype="VT_R4">AlTol</Parameter>
			</Entry>
			<Entry>
				<Device>Boot</Device>
				<Unit>Geschw</Unit>
				<Parameter Vartype="VT_R4">Aussen</Parameter>
			</Entry>
...

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			<Entry>
				<Device>Boot</Device>
				<Unit>Geschw</Unit>
				<Parameter Vartype="VT_R4">AlTol</Parameter>
			</Entry>

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import xml.dom.minidom as xmldom

doc = xmldom.parse( "datei.xml" )

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name = "entry"
parent = doc

for child in parent.childNodes:
   if child.nodeType == doc.ELEMENT_NODE and \
      child.nodeName == name:
         pass

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for child in node.childNodes:
    node.removeChild( child )

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print parent.childNodes

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[<DOM Comment node " ctOPCServ...">, <DOM Element: OPCServer at 0xe28238>]

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print parent.childNodes[1].childNodes[7].childNodes[3].childNodes

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from xml.dom import minidom
doc = minidom.parse( "C:\\temp\\namespace_neu\\PoclA\\ctOPCServer.xml" )
...

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f = open( 'neu.xml', 'w' )
doc.writexml( f )
f.close()

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Traceback (most recent call last):
  File "F:\scripts\python\ctxml.py", line 43, in ?
    walknode(rootNode, outFile, level)
  File "F:\scripts\python\ctxml.py", line 13, in walknode
    walknode(node, outFile, level+1)
  File "F:\scripts\python\ctxml.py", line 13, in walknode
    walknode(node, outFile, level+1)
  File "F:\scripts\python\ctxml.py", line 28, in walknode
    node.removeChild(node)
  File "C:\Programme\Python24\Lib\site-packages\_xmlplus\dom\minidom.py", line 169, in removeChild
    raise xml.dom.NotFoundErr()
NotFoundErr: Node does not exist in this context

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def walknode(parent, outFile, level):
    for node in parent.childNodes:
        if node.nodeType == Node.ELEMENT_NODE:
            printLevel(outFile, level)
            outFile.write('Element: %s\n' % node.nodeName)
            if node.nodeName != "Entry":
                walknode(node, outFile, level+1)
            else: # wir sind da wo wir hin wollen
                """ Prüfen, ob wir den Knoten entfernen müssen """
                for values in delvalues:
                    found = 0
                    for value in values:
                        if value != "":
                            if node.childNodes[1].childNodes[0].nodeValue == value:
                                found = found + 1
                            if node.childNodes[3].childNodes[0].nodeValue == value:
                                found = found + 1
                            if node.childNodes[5].childNodes[0].nodeValue == value:
                                found = found + 1
                            if found == len(values):
                                """ Knoten zum Entfernen gefunden """
                                node.removeChild(node)

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<?xml version="1.0" ?>
<environment>
    <Info>
        <Name>Ich bin`s</Name>
        <Version>die dritte</Version>
        <Date>gestern</Date>
    </Info>
    <Variables>
        <Tag>
            <Name>Essen</Name>
            <Value>Obst</Value>
        </Tag>
        <Tag>
            <Name>ooo</Name>
            <Value>aaa</Value>
        </Tag>
    </Variables>
</environment>

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Array=[Gemüse, rrr]

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for elements in xml.getElementsByTagName('Variables'):
            for node in elements.childNodes:
                if node.nodeType == xml.ELEMENT_NODE and node.nodeName == "Tag":
                    for value in xml.getElementsByTagName("Tag"):
                        if value.nodeType == xml.ELEMENT_NODE:
                            print value
                            node.removeChild(node)

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<DOM Element: Tag at 0x12fe0f8>

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python25\lib\lib-tk\Tkinter.py", line 1403, in __call__
    return self.func(*args)
  File "C:\Python25\TSQTP\func.py", line 474, in save
    node.removeChild(node)
  File "C:\Python25\lib\xml\dom\minidom.py", line 164, in removeChild
    raise xml.dom.NotFoundErr()
NotFoundErr

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from xml.etree import ElementTree as etree

def main():
    new_contents = [u'Gemüse', 'rrr']
    
    doc = etree.parse('test.xml')
    value_nodes = doc.findall('Variables/Tag/Value')
    assert len(new_contents) == len(value_nodes)
    for value_node, new_content in zip(value_nodes, new_contents):
        value_node.text = new_content
    
    etree.dump(doc)

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etree.dump(doc)