can Python be used for GUI based programs

Answer 1

If you want to do some modern UI you should consider using PyQt : https://wiki.python.org/moin/PyQt

Answer 2

yes

Answer 3

Tkinter, wxpython, pyqt, gtk and much more libraries can be useful to create gui based applications. my suggestion, it's good to start with thinter

Answer 4

yes

Answer 5

yes, search Tkinter in google for more. it is really easy to learn.