how to discover what values produced an exception?

[Johanne Fairchild]

How to discover what values produced an exception?  Or perhaps---why
doesn't the Python traceback show the values involved in the TypeError?
For instance:

--8<-------------------------------------------------------->8---
>>> (0,0) < 4
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: '<' not supported between instances of 'tuple' and 'int'
--8<-------------------------------------------------------->8---

It could have said something like: 

--8<-------------------------------------------------------->8---
TypeError: '<' not supported between instances of 'tuple' and 'int'
  in (0,0) < 4.
--8<-------------------------------------------------------->8---

We would know which were the values that caused the problem, which would
be very helpful.