I'd propose bin() to stay in line with the short abbreviated names.
There has been some previous discussion about removing hex()/oct()
builtins for Python 3.0, IIRC. I sure don't think bin() belongs
Perhaps introduce a single function, base(val, radix=10, prefix=''), as a universal base converter that could replace bin(), hex(), oct(), etc.
That would give us fewer builtins and provide an inverse for all the int() conversions (i.e. arbitrary bases). Also, it would allow an unprefixed output which is what I usually need.