[Python-es] Agregar y Eliminar atributos en un xml

[FERNANDO VILLARROEL]

Fantástico gracias Luis por el dato.



On Tuesday, March 18, 2014 12:52 PM, Luis Miguel Morillas <morillas en gmail.com> wrote:
 
Así a ojo y usando Amara  (http://xml3k.org/Amara)


from amara.bindery import parse

doc = parse('ruta al primer doc.xml')

nodo = parse('ruta al segundo documento.xml')

doc.include.context.xml_insert(0, nodo.extension)

doc.xml_write() # muestra en pantalla resultado

nodo_eliminar = doc.xml_select(u'//extension[@name="Juanito"]')[0]

doc.include.context.xml_remove(nodo_eliminar)


Amara (usando el parser de bindery) tiene la ventaja de que siempre
usas objetos python y al estilo python y no te exige conocimientos
elevados en tecnologías xml.


Saludos,

-- luismiguel  (@lmorillas)



El día 17 de marzo de 2014, 17:40, FERNANDO VILLARROEL
<fvillarroel en yahoo.com> escribió:
> Hola comunidad.
>
> Les escribo ya que necesito ayuda con un archivo XML, el asunto es que tengo
> un XML con la siguiente estructura:
>
> <?xml version="1.0" encoding="utf-8"?>
>
> <include>
>   <context name="default">
>
>      <extension name="Local_Extension">
>         <condition field="destination_number" expression="^(5644890\d{4})$">
>         <action application="export" data="dialed_extension=$1"/>
>         <action application="set" data="dialed_extension=$1"/>
>         <action application="set" data="call_timeout=30"/>
>         <action application="set"
> data="called_party_callgroup=${user_data(${dialed_ext}@${domain} var
> callgroup)}"/>
>         <action application="hash"
> data="insert/last_dial/${called_party_callgroup}/${uuid}"/>
>         <action application="set" data="hangup_after_bridge=true"/>
>         <action application="set" data="continue_on_fail=true"/>
>         <action application="hash"
> data="insert/${domain_name}-call_return/${dialed_extension}/${caller_id_number}"/>
>         <action application="hash"
> data="insert/${domain_name}-last_dial_ext/${dialed_extension}/${uuid}"/>
>         <action application="set"
> data="called_party_callgroup=${user_data(${dialed_extension}@${domain_name}
> var callgroup)}"/>
>         <action application="hash"
> data="insert/${domain_name}-last_dial_ext/${called_party_callgroup}/${uuid}"/>
>         <action application="hash"
> data="insert/${domain_name}-last_dial_ext/global/${uuid}"/>
>         <action application="set" data="niblle_account=${nibble_account}"/>
>         <action application="set" data="nibble_rate=0"/>
>         <action application="set" data="lcr_rate=0"/>
>         <action application="bridge"
> data="${sofia_contact(${dialed_extension})}"/>
>         <action application="answer"/>
>         <action application="sleep" data="1000"/>
>         <action application="bridge" data="loopback/app=voicemail:default
> ${domain_name} ${dialed_extension}"/>
>       </condition>
>     </extension>
>
>   </context>
> </include>
>
> Y lo que busco hacer es lo siguiente, debo insertar un pedazo de codigo para
> el atributo <extensions> con lo siguiente:
>
>      <extension name="Juanito">
>         <condition field="destination_number" expression="^(56448908901)$">
>         <action application="export" data="dialed_extension=$1"/>
>         <action application="set" data="dialed_extension=$1"/>
>         <action application="set" data="call_timeout=30"/>
>         <action application="set"
> data="called_party_callgroup=${user_data(${dialed_ext}@${domain} var
> callgroup)}"/>
>         <action application="hash"
> data="insert/last_dial/${called_party_callgroup}/${uuid}"/>
>         <action application="set" data="hangup_after_bridge=true"/>
>         <action application="set" data="continue_on_fail=true"/>
>         <action application="hash"
> data="insert/${domain_name}-call_return/${dialed_extension}/${caller_id_number}"/>
>         <action application="hash"
> data="insert/${domain_name}-last_dial_ext/${dialed_extension}/${uuid}"/>
>         <action application="set"
> data="called_party_callgroup=${user_data(${dialed_extension}@${domain_name}
> var callgroup)}"/>
>         <action application="hash"
> data="insert/${domain_name}-last_dial_ext/${called_party_callgroup}/${uuid}"/>
>         <action application="hash"
> data="insert/${domain_name}-last_dial_ext/global/${uuid}"/>
>         <action application="set" data="niblle_account=${nibble_account}"/>
>         <action application="set" data="nibble_rate=0"/>
>         <action application="set" data="lcr_rate=0"/>
>         <action application="bridge"
> data="${sofia_contact(${dialed_extension})}"/>
>         <action application="answer"/>
>         <action application="sleep" data="1000"/>
>         <action application="bridge" data="loopback/app=voicemail:default
> ${domain_name} ${dialed_extension}"/>
>       </condition>
>     </extension>
>
> Este atributo debe quedar antes del atributo extensions ya existente de tal
> forma que el archivo xml quede de la siguiente forma:
>
> <?xml version="1.0" encoding="utf-8"?>
>
> <include>
>   <context name="default">
>
> <extension name="Juanito">
>         <condition field="destination_number" expression="^(56448908901)$">
>         <action application="export" data="dialed_extension=$1"/>
>         <action application="set" data="dialed_extension=$1"/>
>         <action application="set" data="call_timeout=30"/>
>         <action application="set"
> data="called_party_callgroup=${user_data(${dialed_ext}@${domain} var
> callgroup)}"/>
>         <action application="hash"
> data="insert/last_dial/${called_party_callgroup}/${uuid}"/>
>         <action application="set" data="hangup_after_bridge=true"/>
>         <action application="set" data="continue_on_fail=true"/>
>         <action application="hash"
> data="insert/${domain_name}-call_return/${dialed_extension}/${caller_id_number}"/>
>         <action application="hash"
> data="insert/${domain_name}-last_dial_ext/${dialed_extension}/${uuid}"/>
>         <action application="set"
> data="called_party_callgroup=${user_data(${dialed_extension}@${domain_name}
> var callgroup)}"/>
>         <action application="hash"
> data="insert/${domain_name}-last_dial_ext/${called_party_callgroup}/${uuid}"/>
>         <action application="hash"
> data="insert/${domain_name}-last_dial_ext/global/${uuid}"/>
>         <action application="set" data="niblle_account=${nibble_account}"/>
>         <action application="set" data="nibble_rate=0"/>
>         <action application="set" data="lcr_rate=0"/>
>         <action application="bridge"
> data="${sofia_contact(${dialed_extension})}"/>
>         <action application="answer"/>
>         <action application="sleep" data="1000"/>
>         <action application="bridge" data="loopback/app=voicemail:default
> ${domain_name} ${dialed_extension}"/>
>       </condition>
>     </extension>
>
>
>      <extension name="Local_Extension">
>         <condition field="destination_number" expression="^(5644890\d{4})$">
>         <action application="export" data="dialed_extension=$1"/>
>         <action application="set" data="dialed_extension=$1"/>
>         <action application="set" data="call_timeout=30"/>
>         <action application="set"
> data="called_party_callgroup=${user_data(${dialed_ext}@${domain} var
> callgroup)}"/>
>         <action application="hash"
> data="insert/last_dial/${called_party_callgroup}/${uuid}"/>
>         <action application="set" data="hangup_after_bridge=true"/>
>         <action application="set" data="continue_on_fail=true"/>
>         <action application="hash"
> data="insert/${domain_name}-call_return/${dialed_extension}/${caller_id_number}"/>
>         <action application="hash"
> data="insert/${domain_name}-last_dial_ext/${dialed_extension}/${uuid}"/>
>         <action application="set"
> data="called_party_callgroup=${user_data(${dialed_extension}@${domain_name}
> var callgroup)}"/>
>         <action application="hash"
> data="insert/${domain_name}-last_dial_ext/${called_party_callgroup}/${uuid}"/>
>         <action application="hash"
> data="insert/${domain_name}-last_dial_ext/global/${uuid}"/>
>         <action application="set" data="niblle_account=${nibble_account}"/>
>         <action application="set" data="nibble_rate=0"/>
>         <action application="set" data="lcr_rate=0"/>
>         <action application="bridge"
> data="${sofia_contact(${dialed_extension})}"/>
>         <action application="answer"/>
>         <action application="sleep" data="1000"/>
>         <action application="bridge" data="loopback/app=voicemail:default
> ${domain_name} ${dialed_extension}"/>
>       </condition>
>     </extension>
>
>   </context>
> </include>
>
> De igual manera como lo debo hacer si deseo en algún momento eliminar una
> sección extension por ejemplo si quisiera ahora eliminar toda la sección del
> atributo <extension name="Juanito">
>
> He estado mirando la librería ElementTree, pero veo que hay varias librerías
> disponibles, cual me recomiendan.
>
> Les agradeceré alguna librería que me sirva para este objetivo y o algún
> ejemplo descriptivo sobre como insertar y eliminar secciones o atributos.
>
> Saludos
>
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