Terry Reedy <tjre...@udel.edu> writes: > And indeed, code like this that has not been updated does break in > 3.x. to some people's annoyance. We really really cannot please > everyone ;-).
The problem is that there are too many useful properties that one might expect from comparison operators. For example, it's frequently nice to have a total ordering on all objects. For real numbers, it's nice that the ordering obey the usual ordered-field axioms; but the complex numbers don't have an ordering compatible with the field operators, and imposing a default ordering (e.g., degree-lexicographic) is probably asking for trouble. I agree that the Python 3 behaviour is an improvement, by the way. -- [mdw] -- http://mail.python.org/mailman/listinfo/python-list
