What's the easiest way (language, tools, etc) to write quick-n-dirty ad-hoc GUI apps in Linux? [closed]

Question

For example to create a simple form with couple of controls, doing some simple logic on them, generating a shell command or a web service call and executing it here and now, assuming that it is going to be no tomorrow for this application, no unexpected things can occur to be handled, computer resources are unlimited, etc. The code'd be compact and readable, everything'd fit in 1-2 files, better no special project/solution/makefile at all.

Answer 1

One way would be using Tool Command Language. It supports rapid prototyping, scripted applications, GUIs and testing.

Answer 2

Python with Gtk is easy to use.