Re: Newbie needs help extracting data from XML

2005-12-29 Thread Alan Kennedy 
[Rodney]
 Im a Python newbie and am trying to get the data out of a series of XML 
 files.

As Paul McGuire already noted, it's unusual to extract information from 
a SOAP message this way: it is more usual to use a SOAP toolkit to do 
the job for you.

But, assuming that you know what you're doing, and that you're doing it 
for good reasons, here's a snippet that uses xpath to do what you want.

#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
document = \
?xml version=1.0 encoding=utf-8?
soap:Envelope
   xmlns:soap=http://schemas.xmlsoap.org/soap/envelope/;
   xmlns:soapenc=http://schemas.xmlsoap.org/soap/encoding/;
   xmlns:tns=http://www.ExchangeNetwork.net/schema/v1.0/node.wsdl;
   xmlns:types=http://www.ExchangeNetwork.net/schema/v1.0/node.wsdl;
   xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance;
   xmlns:xsd=http://www.w3.org/2001/XMLSchema;
   soap:Header
 wsu:Timestamp
   xmlns:wsu=http://schemas.xmlsoap.org/ws/2002/07/utility;
   wsu:Created2005-12-28T05:59:38Z/wsu:Created
   wsu:Expires2005-12-28T06:04:38Z/wsu:Expires
 /wsu:Timestamp
   /soap:Header
   soap:Body
 soap:encodingStyle=http://schemas.xmlsoap.org/soap/encoding/;
 q1:NodePingResponse
   xmlns:q1=http://www.ExchangeNetwork.net/schema/v1.0/node.xsd;
   return xsi:type=xsd:stringReady/return
 /q1:NodePingResponse
   /soap:Body
/soap:Envelope


import xml.dom.minidom
import xml.xpath

#dom_tree = xml.dom.minidom.parse('my_xml_file.xml')
dom_tree = xml.dom.minidom.parseString(document)
return_node = xml.xpath.Evaluate('//return', dom_tree)[0]
print Return status is: '%s' % return_node.childNodes[0].nodeValue
#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

You have to install PyXML to get xpath support: http://pyxml.sf.net

There are other ways to do it, e.g. using ElementTree, but I'll leave it 
to others to suggest the best way to do that.

HTH,

-- 
alan kennedy
--
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Re: Newbie needs help extracting data from XML

2005-12-29 Thread Fredrik Lundh 
Alan Kennedy wrote

 There are other ways to do it, e.g. using ElementTree, but I'll leave it
 to others to suggest the best way to do that.

using ElementTree with SOAP is discussed here:

http://effbot.org/zone/elementsoap-1.htm

/F



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Re: Newbie needs help extracting data from XML

2005-12-29 Thread Rodney 
Thanks for the help

This was a SOAP Webservice message.  I used httplib instead of SOAPpy or ZSI 
because SOAPpy cann't do arrays of complex type and ZSI was confusing.

Thanks again



Rodney [EMAIL PROTECTED] wrote in message 
news:[EMAIL PROTECTED]
 Hi,

 Im a Python newbie and am trying to get the data out of a series of XML 
 files.  So for example the xml is:

 ?xml version=1.0 encoding=utf-8?soap:Envelope 
 xmlns:soap=http://schemas.xmlsoap.org/soap/envelope/; 
 xmlns:soapenc=http://schemas.xmlsoap.org/soap/encoding/; 
 xmlns:tns=http://www.ExchangeNetwork.net/schema/v1.0/node.wsdl; 
 xmlns:types=http://www.ExchangeNetwork.net/schema/v1.0/node.wsdl; 
 xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance; 
 xmlns:xsd=http://www.w3.org/2001/XMLSchema;soap:Headerwsu:Timestamp 
 xmlns:wsu=http://schemas.xmlsoap.org/ws/2002/07/utility;wsu:Created2005-12-28T05:59:38Z/wsu:Createdwsu:Expires2005-12-28T06:04:38Z/wsu:Expires/wsu:Timestamp/soap:Headersoap:Body
  
 soap:encodingStyle=http://schemas.xmlsoap.org/soap/encoding/;q1:NodePingResponse
  
 xmlns:q1=http://www.ExchangeNetwork.net/schema/v1.0/node.xsd;return 
 xsi:type=xsd:stringReady/return/q1:NodePingResponse/soap:Body/soap:Envelope


 and I want to get the value from the element return which currently has 
 a value of Ready.

 Other XML files I want to work with may have several elements I want to 
 pull data from.  This seem relatively easy but I have been reading and 
 cruising google for hours and none of the examples make any sense.

 I appreciate any code writing help with this.


 


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Newbie needs help extracting data from XML

2005-12-28 Thread Rodney 
Hi,

Im a Python newbie and am trying to get the data out of a series of XML 
files.  So for example the xml is:

?xml version=1.0 encoding=utf-8?soap:Envelope 
xmlns:soap=http://schemas.xmlsoap.org/soap/envelope/; 
xmlns:soapenc=http://schemas.xmlsoap.org/soap/encoding/; 
xmlns:tns=http://www.ExchangeNetwork.net/schema/v1.0/node.wsdl; 
xmlns:types=http://www.ExchangeNetwork.net/schema/v1.0/node.wsdl; 
xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance; 
xmlns:xsd=http://www.w3.org/2001/XMLSchema;soap:Headerwsu:Timestamp 
xmlns:wsu=http://schemas.xmlsoap.org/ws/2002/07/utility;wsu:Created2005-12-28T05:59:38Z/wsu:Createdwsu:Expires2005-12-28T06:04:38Z/wsu:Expires/wsu:Timestamp/soap:Headersoap:Body
 
soap:encodingStyle=http://schemas.xmlsoap.org/soap/encoding/;q1:NodePingResponse
 
xmlns:q1=http://www.ExchangeNetwork.net/schema/v1.0/node.xsd;return 
xsi:type=xsd:stringReady/return/q1:NodePingResponse/soap:Body/soap:Envelope


and I want to get the value from the element return which currently has a 
value of Ready.

Other XML files I want to work with may have several elements I want to pull 
data from.  This seem relatively easy but I have been reading and cruising 
google for hours and none of the examples make any sense.

I appreciate any code writing help with this.



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Re: Newbie needs help extracting data from XML

2005-12-28 Thread Paul McGuire 
Rodney [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
 Hi,

 Im a Python newbie and am trying to get the data out of a series of XML
 files.  So for example the xml is:

 ?xml version=1.0 encoding=utf-8?soap:Envelope
 xmlns:soap=http://schemas.xmlsoap.org/soap/envelope/;
 xmlns:soapenc=http://schemas.xmlsoap.org/soap/encoding/;
 xmlns:tns=http://www.ExchangeNetwork.net/schema/v1.0/node.wsdl;
 xmlns:types=http://www.ExchangeNetwork.net/schema/v1.0/node.wsdl;
 xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance;
 xmlns:xsd=http://www.w3.org/2001/XMLSchema;soap:Headerwsu:Timestamp

xmlns:wsu=http://schemas.xmlsoap.org/ws/2002/07/utility;wsu:Created2005-
12-28T05:59:38Z/wsu:Createdwsu:Expires2005-12-28T06:04:38Z/wsu:Expires
/wsu:Timestamp/soap:Headersoap:Body

soap:encodingStyle=http://schemas.xmlsoap.org/soap/encoding/;q1:NodePingR
esponse
 xmlns:q1=http://www.ExchangeNetwork.net/schema/v1.0/node.xsd;return

xsi:type=xsd:stringReady/return/q1:NodePingResponse/soap:Body/soap
:Envelope


 and I want to get the value from the element return which currently has
a
 value of Ready.

 Other XML files I want to work with may have several elements I want to
pull
 data from.  This seem relatively easy but I have been reading and cruising
 google for hours and none of the examples make any sense.

 I appreciate any code writing help with this.


This is data in a set of files?  It looks like the SOAP reply from a Web
Service described in the WSDL found at
http://www.ExchangeNetwork.net/schema/v1.0/node.wsdl, specifically the
NodePingResponse which is the return value from the web operation NodePing.
You might best generate the proper Python parsing classes using SOAPpy,
using the WSDL source.

You can also use Python's XML modules for loading the XML into a DOM tree,
or use Fredrik Lundh's ElementTree utility module.

-- Paul


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