Python xml.dom, help reading attribute data

[Thierry Lam]

Let's say I have the following xml tag:

<para role="success"> 1</para>

I can't figure out what kind of python xml.dom codes I should invoke to
read the data 1? Any help please?

Thanks
Thierry

[Jeremy Jones]

Re: Python xml.dom, help reading attribute data

Thierry Lam wrote:
[color=blue]
>Let's say I have the following xml tag:
>
><para role="success"> 1</para>
>
>I can't figure out what kind of python xml.dom codes I should invoke to
>read the data 1? Any help please?
>
>Thanks
>Thierry
>
>
>[/color]
In [20]: import xml.dom.minidom

In [21]: s = '''<para role="success"> 1</para>'''

In [22]: x = xml.dom.minidom .parseString(s)

In [23]: print x.firstChild.fi rstChild.data
1


I doubt this really answers what you're really wanting to ask. And this
is a really really brittle way of trying to parse XML. But it answers
exactly what you're asking. Hope it gives you the start you need. Post
a follow-up when you have more questions.

JMJ

[Alan Kennedy]

Re: Python xml.dom, help reading attribute data

[Thierry Lam][color=blue]
> Let's say I have the following xml tag:
>
> <para role="success"> 1</para>
>
> I can't figure out what kind of python xml.dom codes I should invoke to
> read the data 1? Any help please?[/color]

This is job for xpath.

#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
from xml import xpath
from xml.dom import minidom

doc = """<para role="success"> 1</para>"""

mydom = minidom.parseSt ring(doc)
#result_nodes = xpath.Evaluate( "/para/text()", mydom)
#result_nodes = xpath.Evaluate( "/para[1]/text()", mydom)
result_nodes = xpath.Evaluate( "/para[@role='success']/text()", mydom)
for ix, r in enumerate(resul t_nodes):
print "result %d: %s" % (ix, r)
#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

Xpath support is a part of the PyXML package, which you can get from here

http://pyxml.sourceforge.net

Xpath tutorials from here

http://www.zvon.org/xxl/XPathTutorial/General/examples.html

http://www.w3schools.com/xpath/

there-are-other-ways-to-do-it-but-i-like-xpath-ly'yrs,

--
alan kennedy
------------------------------------------------------
email alan: http://xhaus.com/contact/alan

[Giovanni Bajo]

Re: Python xml.dom, help reading attribute data

Thierry Lam wrote:
[color=blue]
> Let's say I have the following xml tag:
>
> <para role="success"> 1</para>
>
> I can't figure out what kind of python xml.dom codes I should invoke
> to read the data 1? Any help please?
>
> Thanks
> Thierry[/color]


If you use elementtree:
[color=blue][color=green][color=darkred]
>>> from elementtree import ElementTree
>>> node = ElementTree.fro mstring("""<par a role="success"> 1</para>""")
>>> node.text[/color][/color][/color]
'1'[color=blue][color=green][color=darkred]
>>> node.attrib["role"][/color][/color][/color]
'success'
--
Giovanni Bajo