Read the value of a cell from another excel file without opening it
                                Read the value of a cell from another excel file without opening it                            
                            Gtk library to create a window with a notebook widget. This widget allows you to add multiple tabs, each containing different content. Below, I'll provide a step-by-step guide and a sample program to create a PyGTK window with tabs using Python.                            requests library to make an HTTP request to the server and retrieve the content of the file. Here's a basic example: