Need help to write data onto an XML file after reading data from another xml file

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Subject	Need help to write data onto an XML file after reading data from another xml file
From	varun7rs@gmail.com
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Hello Users,

I am in dire need of your help. I have been working on this code for quite some time and it is making me restless. All I am trying to do is,

1. Read data from an xml file. Source: http://sndlib.zib.de/coredata.download.action?objectName=germany50&format=xml&objectType=network

2. The data I'm concerned about is the node ID, co-ordinates, capacity of the links, source and destination names.

3. I'm creating a topology with this information and the topology is same as the one given in the xml file. But, I'd like to add a few extra parameters and demands which I have mentioned in the .py file. 

4. This is where I am faltering. I am just not able to create this topology. The file has also become really messy as I tried a lot of weird stuff and commented it out as it did not work. 

5. I'll attach the relevant files and I'd like to write the output onto a new xml file. 

I'd be glad if any of you could help me out. I'm indebted to you guys. Oh I was not aware that I could  attach files. Anyways, here is the link to the files I'm working on
https://www.dropbox.com/sh/i8h321y7c9c60vt/AADzDj7oOM8YU76Ww6W4LIPYa

Thanks a lot everyone

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Need help to write data onto an XML file after reading data from another xml file varun7rs@gmail.com - 2014-05-13 07:31 -0700
  Re: Need help to write data onto an XML file after reading data from another xml file Dave Angel <d@davea.name> - 2014-05-13 22:09 -0400
  Re: Need help to write data onto an XML file after reading data from another xml file varun7rs@gmail.com - 2014-05-13 23:49 -0700
    Re: Need help to write data onto an XML file after reading data from another xml file Dave Angel <davea@davea.name> - 2014-05-14 03:32 -0400
      Re: Need help to write data onto an XML file after reading data from another xml file varun7rs@gmail.com - 2014-05-14 06:42 -0700
        Re: Need help to write data onto an XML file after reading data from another xml file Chris Angelico <rosuav@gmail.com> - 2014-05-14 23:49 +1000

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