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LXML namespace in sub-elements formatted like XML spreadsheet


LXML namespace in sub-elements formatted like XML spreadsheet

By : mamatha.s.k mamatha
Date : November 22 2020, 10:38 AM
wish of those help If you need to use a namespace for an attribute of an Element or SubElement you can't pass it using the **kwargs (**_extra) syntax, as that does only allow to specify attributes with a name that is a valid python identifier.
So in this case you need to use the attrib argument to pass the attribute, e.g.:
code :
...
WorksheetB = ET.SubElement(root, 'WorksheetB',
    {"{%s}Name" % namespaces['ss']: "This is worksheet B"})
...


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How to add a namespace to an attribute in lxml

How to add a namespace to an attribute in lxml


By : Silnar
Date : March 29 2020, 07:55 AM
I hope this helps you . This is not a full reply but just a few pointers.
adlcp is not the namespace it is a namespace prefix. The namespace is defined in the document by an attribute like xmlns:adlcp="http://xxx/yy/zzz"
lxml ignoring elements with undefined namespace prefix

lxml ignoring elements with undefined namespace prefix


By : user5022191
Date : March 29 2020, 07:55 AM
help you fix your problem I've got some simple code stepping through a large XML file (containing entities defined in the DTD): , Well, this may not be entirely satisfying, but here is what I found:
code :
>>> root = tree.getroot()
>>> root.attrib
{'{http://www.w3.org/2001/XMLSchema-instance}schemaLocation': 'http://xmlns.oracle.com/weblogic/security/xacml'}
>>> root.nsmap
{None: 'http://xmlns.oracle.com/weblogic/domain', 'wls': 'http://xmlns.oracle.com/weblogic/security/wls', 'sec': 'http://xmlns.oracle.com/weblogic/security', 'xsi': 'http://www.w3.org/2001/XMLSchema-instance'}
>>> 
<domain xmlns="http://xmlns.oracle.com/weblogic/domain"
    xmlns:sec="http://xmlns.oracle.com/weblogic/security"
    xmlns:wls="http://xmlns.oracle.com/weblogic/security/wls"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://xmlns.oracle.com/weblogic/security/xacml">
lxml use namespace instead of ns0, ns1,

lxml use namespace instead of ns0, ns1,


By : Zach Williams
Date : March 29 2020, 07:55 AM
wish of those help I have just started with lxml basics and I am stuck with namespaces: I need to generate an xml like this:
code :
from lxml import etree

ns_bldg = "http://www.opengis.net/citygml/building/2.0"
nsmap = {
    'bldg': ns_bldg,
}

cityModel = etree.Element("cityModel", nsmap=nsmap)
cityObject = etree.SubElement(cityModel, "cityObjectMember")
bldg = etree.SubElement(cityObject, "{%s}Building" % ns_bldg)
function = etree.SubElement(bldg, "{%s}function" % ns_bldg)
function.text = "1000"
print etree.tostring(cityModel, pretty_print=True)
<cityModel xmlns:bldg="http://www.opengis.net/citygml/building/2.0">
  <cityObjectMember>
    <bldg:Building>
      <bldg:function>1000</bldg:function>
    </bldg:Building>
  </cityObjectMember>
</cityModel>
How to add namespace prefix to attribute with lxml (node is with other namespace)?

How to add namespace prefix to attribute with lxml (node is with other namespace)?


By : André
Date : March 29 2020, 07:55 AM
To fix the issue you can do I need to get this xml: , Just use QName, like you do with element names:
code :
action.attrib[QName(XMLNamespaces.s, 'mustUnderstand')] = "1"
lxml: how to know what namespace to use for namespace prefix?

lxml: how to know what namespace to use for namespace prefix?


By : user3542592
Date : March 29 2020, 07:55 AM
this one helps. You're not correctly providing namespace information to the xpath method. You should read through the "Namespaces and prefixes" section of the lxml documentation.
Instead of:
code :
elem = tree.xpath('//cbc:UBLVersionID')
elem = tree.xpath('//cbc:UBLVersionID', namespaces={'cbc': 'urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2'})
>>> elem = tree.xpath('//cbc:UBLVersionID', namespaces={'cbc': 'urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2'})
>>> elem
[<Element {urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2}UBLVersionID at 0x7f536f1c83c0>]
from lxml import etree

NSMAP = {
    "default": "urn:oasis:names:specification:ubl:schema:xsd:Invoice-2",
    "cac": "urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2",
    "cbc": "urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2",
    "ccts": "urn:un:unece:uncefact:documentation:2",
    "ds": "http://www.w3.org/2000/09/xmldsig#",
    "ext": "urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2",
    "qdt": "urn:oasis:names:specification:ubl:schema:xsd:QualifiedDatatypes-2",
    "sac": "urn:sunat:names:specification:ubl:peru:schema:xsd:SunatAggregateComponents-1",
    "udt": "urn:un:unece:uncefact:data:specification:UnqualifiedDataTypesSchemaModule:2",
    "xsi": "http://www.w3.org/2001/XMLSchema-instance",
}

with open('data.xml') as fd:
    tree = etree.parse(fd)

elem = tree.xpath('//cbc:UBLVersionID', namespaces=NSMAP)
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