Design Code Iteration
Rapid Application Development, RAD, is an iterative approach to software development intended for applications with Graphical User Interface, a GUI. Notice in the diagram that UserDesign and Construction overlap; the pygubu-designer fills that gap. The first step to starting a new version of an application is to redo Requirements Planning.
Sourced from the RAD page link above.
There are many other software development processes, where pygubu-designer can be helpful, so don't hesitate to try it.
Many times, your designer and programmer will collaborate to satisfy another requirement. Despite what you see in some examples, please do not edit the *.py file generated by pyguby-designer because it will get overwritten. The programmer should use inheritance to prevent the designer from overwriting custom code.
myappbase.py, generated code from pygubu-designer:
paste code here
myapp.py, custom code from the programmer:
paste code here