Exceptions in Extensions: weird problem

[Martin v. Loewis]

Harald Kirsch <kirschh at lionbioscience.com> writes:

> How can step (4) initialize/augment the error traceback with the
> traceback information generated in step (1)?

If you can guarantee that no other Python exception occurs between
step 1 and step 4, just don't perform PyErr_Clear() in step 2
(i.e. don't "catch" the exception); then use PyErr_Fetch in step 4 to
get the exception object and traceback. You might even just return
NULL, in which case the pending exception will continue to unwind the
Python stack.

HTH,
Martin