XML parsing with python

[inder]

Hi All,

I am new to xml . I need to parse the xml file . After reading and
browsing on the web , I could get much help .

I guess SAX would be better suited for my requirement .

Could some juct provide me a sample python code so that I can execute
it and see how the parsing actually happens .

Lets say my xml file -


 

I,Robot
100
Isaac Asimov


Blade Runner
400
Philip K. Dick




Lord Of The Rings
2
Tolkien


XML-Schema Specification
5000
W3C




Aladin
150
Don't know





--

I need the output to be - (elements containing 'title' )

I,Robot
Blade Runner
Lord Of The Rings
XML-Schema Specification
Aladin


Your responses are greatly appreciated .


Thanks in advace
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Re: XML parsing with python

[inder]

On Aug 17, 8:31 pm, John Posner  wrote:
> > Use the iterparse() function of the xml.etree.ElementTree package.
>
> >http://effbot.org/zone/element-iterparse.htm
> >http://codespeak.net/lxml/parsing.html#iterparse-and-iterwalk
>
> > Stefan
>
> iterparse() is too big a hammer for this purpose, IMO. How about this:
>
>   from xml.etree.ElementTree import ElementTree
>   tree = ElementTree(None, "myfile.xml")
>   for elem in tree.findall('//book/title'):
>       print elem.text
>
> -John

Thanks for the prompt reply .

I feel let me try using iterparse. Will it be slower compared to SAX
parsing ... ultimately I will have a huge xml file to parse ?


Another question , I will also need to validate my xml against xsd . I
would like to do this validation through the parsing tool  itself .

Does there exist an Unix utility which validates or even a python
library call would be fine  ?

Thanks in advance
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Re: XML parsing with python

[inder]

On Aug 18, 11:24 am, Stefan Behnel  wrote:
> inder wrote:
> > On Aug 17, 8:31 pm, John Posner  wrote:
> >>> Use the iterparse() function of the xml.etree.ElementTree package.
> >>>http://effbot.org/zone/element-iterparse.htm
> >>>http://codespeak.net/lxml/parsing.html#iterparse-and-iterwalk
> >>> Stefan
> >> iterparse() is too big a hammer for this purpose, IMO. How about this:
>
> >>   from xml.etree.ElementTree import ElementTree
> >>   tree = ElementTree(None, "myfile.xml")
> >>   for elem in tree.findall('//book/title'):
> >>       print elem.text
>
> >> -John
>
> > Thanks for the prompt reply .
>
> > I feel let me try using iterparse. Will it be slower compared to SAX
> > parsing ... ultimately I will have a huge xml file to parse ?
>
> If you use the cElementTree module, it may even be faster.
>
> > Another question , I will also need to validate my xml against xsd . I
> > would like to do this validation through the parsing tool  itself .
>
> In that case, you can use lxml instead of ElementTree.
>
> http://codespeak.net/lxml/
>
> Stefan

Hi ,

Is lxml part of standard python package ? I am having python 2.5 .

I might not be able to use any additional package other than the
standard python . Could you please suggest something part of standard
python package ?

Thanks
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