How to convert a file with a similar structure to normal *.xlsx?

Question

Python

There is a file with such a structure, I give a piece:

https://pastebin.com/7tt0g3VB

Can it be converted to *.xlsx by any Python library?
It currently uses win32com.client and win32.gencache.EnsureDispatch('Excel.Application'), but this only works on Windows and with Microsoft Office installed. Is there anything that can be converted without such restrictions? The required files contain only tables with minimal formatting. Images, diagrams and other complex elements are not required.

PS As I understand it, the format of this file is XML Spreadsheet 2003, ie. I need to convert it to XLSX

Answer 1

If you need under Linux, then:
https://pypi.org/project/pyoo/
LibreOffice or OpenOffice is still needed.
Please describe in more detail what the restrictions are.
Option 2: Parse the XML (manually) with something for xml,
some advise BeautifulSoup