When using Terminal.app on Mac OSX (10.6) whenever bpython shows autocomplete suggestions, the list of suggestions is surrounded by a block of ?'s and q's. For instance:
>>> x
?qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq?
?xrange( ?
?qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq?
This hasn't always been this way, as I recall using bpython sometime in the past on OSX and recall the autocomplete suggestions block being bordered with either the -, = or | characters.
I'm using bpython version 0.9.7.1 on top of Python 2.6.1