I don't use IPython, so I dunno what exactly IPython gives. However, DrRacket does allow images as input and output directly in REPL and source[1] Another cool

I don't use IPython, so I dunno what exactly IPython gives. However, DrRacket does allow images as input and output directly in REPL and source[1] Another cool DrRacket feature for beginners as well as experienced is its debugging features. Whenever your program interrupts, be it exception or breakpoint, you can visually trace bindings to its source by hovering pointer on symbols which in turns shows a series of arrows. [1] http://docs.racket-lang.org/quick/ http://docs.racket-lang.org/quick/