Prepending to traceback

[Thomas Guettler]

Am Wed, 02 Feb 2005 13:55:24 +0100 schrieb Stefan Behnel:

> Hi!
> 
> I'm writing a parser using pyparsing and I would like to augment the 
> ParserException tracebacks with information about the actual error line *in 
> the parsed text*. Pyparsing provides me with everything I need (parsed line 
> and column), but is there a way to push that information on the traceback?

Hi,

have a look at the source of ParseException. I guess there
is attribute which holds the string. If the attribute is "msg",
you could do it like this:

try:
    ....
except ParseException, e:
    e.msg="Textbefore %s" % e.msg
    raise e

(code is not tested)

 Thomas
 

-- 
Thomas Güttler, http://www.thomas-guettler.de/