FYI for Windows users..."pip install bpython" won't work. You must install the Curses binary. I suggest from here: http://www.lfd.uci.edu/~gohlke/pythonlibs/#curses
Could you possibly drop me an email or get me on IRC (again, see website for details) to let me know how this curses binary works on Windows ? It'd be great to add some documentation to the bpython site on this.