[email]nobu.nokada@softhome.net[/email] wrote in message news:<200306240808.h5O88TuG016078@sharui.nakada.ka numa.tochigi.jp>...
> You can do just `raise' without arguments. Then the backtrace
> is preserved.
This is all changed for the next release. The parser now only ever
generates ParseExceptions, which now extends RuntimeError, and the
re-raising of exceptions preserves the backtrace.

Thanks for the suggestions.

--- SER