Transform a spreadsheet into a localization xml file using python

Some time ago a customer at my work provided descriptions of some sort of article codes in the form of a spreadsheet. We needed to transform the information into a localization file in xml format. I don't really remember how I did this at that time. I believe I used some text editor and did some string replacements. I figured it would be a one time thing, so why automate. Now, last week a colleague started working on a new project for this client and it turns out he needs to build again new localization files.

So I figured a script that would automate the transformation would be nice to have, fun to write and good practice.

First we need to export the spreadsheet as a csv file (UTF-8 encoded) and call it input.csv. I use LibreOffice to do this.
Export the spreadsheet to csv file UTF-8 encoded

We will run the python script from the same directory as the input file.
This will result in the output.xml file.