Hi,

we developed a module with a similar requirement. The module loads an excel file that is stored on the server, writes information in some sheets and finally stores the excel file in the odoo database. The user can download the file through the web client.

To achieve this, we use the openpyxl module: \openpyxl. 

I'm not sure if all format properties of a cell are preserved, but at least the font, size, colour are not modified when you write in a cell.

I hope this few information can help you find a solution for your project.

Best regards

Yvan 

Hi Everyone

I'm still not finding how to write in an existing Excel file (Maintain the existing cell formats) and let the user print it.

If Anyone can help, I will appreciate it. Thanks a lot !!

Thanks in advance