[Tutor] small ElementTree problem

[Alex Hall]

Thanks, I think I have it working.

On 1/27/11, Karim <karim.liateni at free.fr> wrote:
>
> id is a tag so it is a OBJECT Element with attributes accessible by
> dictionnary x.attrib[key] and x.text for tag content text.
>
> canonical string representation of your Element object: Obj.id :>  <Element
> 'result' at [mem addr]
> And root is also an Element but the parent of id and name childs =>
> composite pattern.
> For result use iterator as below (not tested but should be ok):
>
> *_/#Parsing:/_
>
>        doc = ElementTree()
>        doc.parse(xmlFile)*
>
> *_/#iteration over tag element:/_
>
> ids  = []
> names =[]
> for result in doc.iter('result'):
>    idElem   = result.find('id')
> ***   nameElem = result.find('name')**
> *   ids.append(idElem.text)
>    names.append(nameElement.text)
>
> final = zip(ids, names)
> *
>
> You are not obliged to provide the full XPATH. Etree search for you.
>
> Regards
> Karim
>
> On 01/27/2011 11:23 PM, Alex Hall wrote:
>> Hi all,
>> I am using, and very much enjoying, the ElementTree library. However,
>> I have hit a problem. Say I have something along the lines of:
>>
>> <service>
>> <message>Message from Service</message>
>> <version>1.0</version>
>>   <list>
>>    <result>
>>     <id>1</id>
>>     <name>result 1</name>
>>    </result>
>>    <result>
>>     <id>2</id>
>>     <name>result 2</name>
>>    </result>
>>   </list>
>> </service>
>>
>> In my ResultSet class, I parse this to get the text of elements like
>> message or version. Then, I use root.findall("list/result") and
>> iterate over the result, passing to a second function which parses the
>> passed-in elements into Result objects. For example:
>>
>> all=root.findall("list/result")
>> for i in all:
>>   self.mylist.append(Obj().parse(i))
>>
>> In Obj.parse(), the element passed in is treated like this:
>>
>> def parse(data):
>>   root=data.getroot()
>>   self.id=root.find("id").text
>> self.name=root.find("name).text
>>
>> Printing the results of the above through Obj.id or Obj.name gives me
>> odd behavior:
>> print Obj.id :>  <Element 'result' at [mem addr]
>> print self.id :>  None
>>
>> What is going on? Does the root change when I call find()? Why would
>> an Element object get used when I clearly say to use the text of the
>> found element? TIA.
>>
>
>


-- 
Have a great day,
Alex (msg sent from GMail website)
mehgcap at gmail.com; http://www.facebook.com/mehgcap