Previous answers regarding unpacking/unzipping the XLSX file is the correct starting point. Thereafter you'll need to know how the extracted files work together. It's rather convoluted.
The best thing to do is be specific about exactly what data you want to extract then I'm sure you'll get some sample code that shows how you achieve your objective
I am forced to ask this question
My mentor has given me a task to extract data from files with pure python, there were some txt file which were easy but there is a file with xlsx extension and I can't find any where if it is possible to extract the data from it with pure python (I have been searching for more than 3 weeks now).
Please if it is not possible tell me so that I can show this to her with confidence because my mentor keeps insisting that it is possible and I should do it with pure python but she refuses to give me any clues and tips.
And If it is possible tell me how to do it or where to read more about it.
Is it possible to read information from an xlsx file without any libraries in python?