The Tkinter library in Python has a number of file dialogs that allow programs to ask for a file from a user. Using these dialogs it is possible to accept a file from a user and read the contents of that file.
Tkinter comes with a number of different dialogs that have a number of options. These allow users to load directories and files into your python applications, or to point to files that they want to save information into.
In this article we will be concentrating on reading information from files and so the save dialogs will not feature here.
Read more here: https://www.hashbangcode.com/article/reading-user-files-using-tkinter-python