I'm working on a Python project that is executed on a terminal (or console) for which I am planning to implement a GUI.

I did not major in CS so I really have no idea how to effectively design a terminal GUI such that:

1. the user interface looks good
2. in GUI, it is directed to a certain widget, let's say, a text label, or a bottom bar, or a hide-able frame.

Do you have any suggestions?

Currently, I am using the print function to provide essential information on STDOUT during execution, so a lot of print calls are distributed here and there in the code.

I'm thinking of using macro-like variables such as 'FILE_NOT_EXISTS_MESSAGE' for printing, and all of them and their values would be defined in one file.

Is that a standard way to do this?

Should I introduce a logging system?

In summary, I'm looking for a pattern for handling console output that is effective and adaptable.