Forcing xml.etree to output “unused” namespaces










4















I'm trying to create shibboleth configuration files using xml.etree in python, and I'm having problems with it omitting namespace assignments when it output the finished document.
I'm pretty sure that it's the problem described in Outputting an “unused” XML namespace using ElementTree



I declare them...



namespaces = 
'resolver': 'urn:mace:shibboleth:2.0:resolver',
'xsi': 'http://www.w3.org/2001/XMLSchema-instance',
'pc': 'urn:mace:shibboleth:2.0:resolver:pc',
'ad': 'urn:mace:shibboleth:2.0:resolver:ad',
'dc': 'urn:mace:shibboleth:2.0:resolver:dc',
'enc': 'urn:mace:shibboleth:2.0:attribute:encoder',
'sec': 'urn:mace:shibboleth:2.0:security',


for prefix, uri in namespaces.iteritems():
ET.register_namespace(prefix, uri)


If I print out the namespaces that have been defined for the document...



print json.dumps( ET._namespace_map, indent=True )


I see my namespaces there..




"urn:mace:shibboleth:2.0:resolver:pc": "pc",
"http://schemas.xmlsoap.org/wsdl/": "wsdl",
"urn:mace:shibboleth:2.0:resolver:ad": "ad",
"urn:mace:shibboleth:2.0:resolver": "resolver",
"http://www.w3.org/1999/xhtml": "html",
"http://www.w3.org/1999/02/22-rdf-syntax-ns#": "rdf",
"urn:mace:shibboleth:2.0:security": "sec",
"urn:mace:shibboleth:2.0:attribute:encoder": "enc",
"http://www.w3.org/2001/XMLSchema": "xs",
"http://www.w3.org/2001/XMLSchema-instance": "xsi",
"http://www.w3.org/XML/1998/namespace": "xml",
"urn:mace:shibboleth:2.0:resolver:dc": "dc"



When I write the document to a file, or dump it to stdout, it omits the "enc" and "pc" namespaces. Like the other question, "enc" and "pc" aren't used to qualify elements, but are used in qualifying attribute values. I could force them to show up by adding them to the document manually...



root.set("xmlns:enc", "urn:mace:shibboleth:2.0:attribute:encoder")
root.set("xmlns:pc", "urn:mace:shibboleth:2.0:resolver:pc")


It feels like I shouldn't have to do that.
Is there a way to force xml.etree to output all of the defined namespaces when you output a document?



Liam










share|improve this question






















  • Just ran into the same problem myself and couldn't find a solution better than your root.set workaround! Some kwarg option like force=True for register_namespace would be much nicer.

    – eupharis
    Nov 18 '15 at 19:31











  • Have you tried to use lxml instead of ElementTree? lxml does not remove namespace declarations. See stackoverflow.com/a/46110195/407651.

    – mzjn
    Nov 14 '18 at 7:03
















4















I'm trying to create shibboleth configuration files using xml.etree in python, and I'm having problems with it omitting namespace assignments when it output the finished document.
I'm pretty sure that it's the problem described in Outputting an “unused” XML namespace using ElementTree



I declare them...



namespaces = 
'resolver': 'urn:mace:shibboleth:2.0:resolver',
'xsi': 'http://www.w3.org/2001/XMLSchema-instance',
'pc': 'urn:mace:shibboleth:2.0:resolver:pc',
'ad': 'urn:mace:shibboleth:2.0:resolver:ad',
'dc': 'urn:mace:shibboleth:2.0:resolver:dc',
'enc': 'urn:mace:shibboleth:2.0:attribute:encoder',
'sec': 'urn:mace:shibboleth:2.0:security',


for prefix, uri in namespaces.iteritems():
ET.register_namespace(prefix, uri)


If I print out the namespaces that have been defined for the document...



print json.dumps( ET._namespace_map, indent=True )


I see my namespaces there..




"urn:mace:shibboleth:2.0:resolver:pc": "pc",
"http://schemas.xmlsoap.org/wsdl/": "wsdl",
"urn:mace:shibboleth:2.0:resolver:ad": "ad",
"urn:mace:shibboleth:2.0:resolver": "resolver",
"http://www.w3.org/1999/xhtml": "html",
"http://www.w3.org/1999/02/22-rdf-syntax-ns#": "rdf",
"urn:mace:shibboleth:2.0:security": "sec",
"urn:mace:shibboleth:2.0:attribute:encoder": "enc",
"http://www.w3.org/2001/XMLSchema": "xs",
"http://www.w3.org/2001/XMLSchema-instance": "xsi",
"http://www.w3.org/XML/1998/namespace": "xml",
"urn:mace:shibboleth:2.0:resolver:dc": "dc"



When I write the document to a file, or dump it to stdout, it omits the "enc" and "pc" namespaces. Like the other question, "enc" and "pc" aren't used to qualify elements, but are used in qualifying attribute values. I could force them to show up by adding them to the document manually...



root.set("xmlns:enc", "urn:mace:shibboleth:2.0:attribute:encoder")
root.set("xmlns:pc", "urn:mace:shibboleth:2.0:resolver:pc")


It feels like I shouldn't have to do that.
Is there a way to force xml.etree to output all of the defined namespaces when you output a document?



Liam










share|improve this question






















  • Just ran into the same problem myself and couldn't find a solution better than your root.set workaround! Some kwarg option like force=True for register_namespace would be much nicer.

    – eupharis
    Nov 18 '15 at 19:31











  • Have you tried to use lxml instead of ElementTree? lxml does not remove namespace declarations. See stackoverflow.com/a/46110195/407651.

    – mzjn
    Nov 14 '18 at 7:03














4












4








4


1






I'm trying to create shibboleth configuration files using xml.etree in python, and I'm having problems with it omitting namespace assignments when it output the finished document.
I'm pretty sure that it's the problem described in Outputting an “unused” XML namespace using ElementTree



I declare them...



namespaces = 
'resolver': 'urn:mace:shibboleth:2.0:resolver',
'xsi': 'http://www.w3.org/2001/XMLSchema-instance',
'pc': 'urn:mace:shibboleth:2.0:resolver:pc',
'ad': 'urn:mace:shibboleth:2.0:resolver:ad',
'dc': 'urn:mace:shibboleth:2.0:resolver:dc',
'enc': 'urn:mace:shibboleth:2.0:attribute:encoder',
'sec': 'urn:mace:shibboleth:2.0:security',


for prefix, uri in namespaces.iteritems():
ET.register_namespace(prefix, uri)


If I print out the namespaces that have been defined for the document...



print json.dumps( ET._namespace_map, indent=True )


I see my namespaces there..




"urn:mace:shibboleth:2.0:resolver:pc": "pc",
"http://schemas.xmlsoap.org/wsdl/": "wsdl",
"urn:mace:shibboleth:2.0:resolver:ad": "ad",
"urn:mace:shibboleth:2.0:resolver": "resolver",
"http://www.w3.org/1999/xhtml": "html",
"http://www.w3.org/1999/02/22-rdf-syntax-ns#": "rdf",
"urn:mace:shibboleth:2.0:security": "sec",
"urn:mace:shibboleth:2.0:attribute:encoder": "enc",
"http://www.w3.org/2001/XMLSchema": "xs",
"http://www.w3.org/2001/XMLSchema-instance": "xsi",
"http://www.w3.org/XML/1998/namespace": "xml",
"urn:mace:shibboleth:2.0:resolver:dc": "dc"



When I write the document to a file, or dump it to stdout, it omits the "enc" and "pc" namespaces. Like the other question, "enc" and "pc" aren't used to qualify elements, but are used in qualifying attribute values. I could force them to show up by adding them to the document manually...



root.set("xmlns:enc", "urn:mace:shibboleth:2.0:attribute:encoder")
root.set("xmlns:pc", "urn:mace:shibboleth:2.0:resolver:pc")


It feels like I shouldn't have to do that.
Is there a way to force xml.etree to output all of the defined namespaces when you output a document?



Liam










share|improve this question














I'm trying to create shibboleth configuration files using xml.etree in python, and I'm having problems with it omitting namespace assignments when it output the finished document.
I'm pretty sure that it's the problem described in Outputting an “unused” XML namespace using ElementTree



I declare them...



namespaces = 
'resolver': 'urn:mace:shibboleth:2.0:resolver',
'xsi': 'http://www.w3.org/2001/XMLSchema-instance',
'pc': 'urn:mace:shibboleth:2.0:resolver:pc',
'ad': 'urn:mace:shibboleth:2.0:resolver:ad',
'dc': 'urn:mace:shibboleth:2.0:resolver:dc',
'enc': 'urn:mace:shibboleth:2.0:attribute:encoder',
'sec': 'urn:mace:shibboleth:2.0:security',


for prefix, uri in namespaces.iteritems():
ET.register_namespace(prefix, uri)


If I print out the namespaces that have been defined for the document...



print json.dumps( ET._namespace_map, indent=True )


I see my namespaces there..




"urn:mace:shibboleth:2.0:resolver:pc": "pc",
"http://schemas.xmlsoap.org/wsdl/": "wsdl",
"urn:mace:shibboleth:2.0:resolver:ad": "ad",
"urn:mace:shibboleth:2.0:resolver": "resolver",
"http://www.w3.org/1999/xhtml": "html",
"http://www.w3.org/1999/02/22-rdf-syntax-ns#": "rdf",
"urn:mace:shibboleth:2.0:security": "sec",
"urn:mace:shibboleth:2.0:attribute:encoder": "enc",
"http://www.w3.org/2001/XMLSchema": "xs",
"http://www.w3.org/2001/XMLSchema-instance": "xsi",
"http://www.w3.org/XML/1998/namespace": "xml",
"urn:mace:shibboleth:2.0:resolver:dc": "dc"



When I write the document to a file, or dump it to stdout, it omits the "enc" and "pc" namespaces. Like the other question, "enc" and "pc" aren't used to qualify elements, but are used in qualifying attribute values. I could force them to show up by adding them to the document manually...



root.set("xmlns:enc", "urn:mace:shibboleth:2.0:attribute:encoder")
root.set("xmlns:pc", "urn:mace:shibboleth:2.0:resolver:pc")


It feels like I shouldn't have to do that.
Is there a way to force xml.etree to output all of the defined namespaces when you output a document?



Liam







python xml xml-namespaces elementtree shibboleth






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Jul 3 '14 at 14:59









uglycat5uglycat5

214




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  • Just ran into the same problem myself and couldn't find a solution better than your root.set workaround! Some kwarg option like force=True for register_namespace would be much nicer.

    – eupharis
    Nov 18 '15 at 19:31











  • Have you tried to use lxml instead of ElementTree? lxml does not remove namespace declarations. See stackoverflow.com/a/46110195/407651.

    – mzjn
    Nov 14 '18 at 7:03


















  • Just ran into the same problem myself and couldn't find a solution better than your root.set workaround! Some kwarg option like force=True for register_namespace would be much nicer.

    – eupharis
    Nov 18 '15 at 19:31











  • Have you tried to use lxml instead of ElementTree? lxml does not remove namespace declarations. See stackoverflow.com/a/46110195/407651.

    – mzjn
    Nov 14 '18 at 7:03

















Just ran into the same problem myself and couldn't find a solution better than your root.set workaround! Some kwarg option like force=True for register_namespace would be much nicer.

– eupharis
Nov 18 '15 at 19:31





Just ran into the same problem myself and couldn't find a solution better than your root.set workaround! Some kwarg option like force=True for register_namespace would be much nicer.

– eupharis
Nov 18 '15 at 19:31













Have you tried to use lxml instead of ElementTree? lxml does not remove namespace declarations. See stackoverflow.com/a/46110195/407651.

– mzjn
Nov 14 '18 at 7:03






Have you tried to use lxml instead of ElementTree? lxml does not remove namespace declarations. See stackoverflow.com/a/46110195/407651.

– mzjn
Nov 14 '18 at 7:03













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