[$] One million ought to be enough for anybody

Programming languages generally have limits-explicit or implicit-on variousaspects of their operation. Things like the maximum length of anidentifier or the range of values that a variable can store are fairlyobvious examples, but there are others, many of which are unspecifiedby the language designers and come about from various implementations ofthe language. That ambiguity has consequences, so nailing down a widevariety of limits in Python is the target of an ongoing discussion on thepython-dev mailing list.