- (probably easy): operations: str for ints, instances (only something
very simple for the latter). all other uses are cheating, as
are all uses of hex, oct, repr.
+ mostly DONE apart from instances which we're not sure we need anyway
- (easy) list methods reverse, pop, insert, index(?)
task: only left: remove the single index() call in PyPy (typeobject.py)
invocations like concatenation and str() on integers
task: 1. figure out what kind of formatting we use in PyPy
+ mostly DONE apart from possibly '%s' % some random instance
* lltype will also need to grow a new primitive type, UnicodeChar.