NNTPlib::xover problem

[Helmut Jarausch]

Hi

I try to regularly extract recent news from some newsgroups.
If News is an NNTP object I try
(Response,Articles)= News.xover(str(int(Last)+1),'10000000')
where 'Last' is the (previously saved) number of the last
article read.
If there are no new articles I get an Exception

Traceback (most recent call last):
   File "/home/jarausch/Python_My/News", line 36, in -toplevel-
     (Response,Articles)= News.xover(str(int(Last)+1),'10000000')
   File "/usr/local/lib/python2.4/nntplib.py", line 479, in xover
     resp, lines = self.longcmd('XOVER ' + start + '-' + end, file)
   File "/usr/local/lib/python2.4/nntplib.py", line 265, in longcmd
     return self.getlongresp(file)
   File "/usr/local/lib/python2.4/nntplib.py", line 236, in getlongresp
     resp = self.getresp()
   File "/usr/local/lib/python2.4/nntplib.py", line 219, in getresp
     raise NNTPTemporaryError(resp)
NNTPTemporaryError: 420 No such article


I would have expected to get an empty 'Response' or the value None
for 'Articles'.

What am I missing?

(This is Python 2.4.3)

Many thanks for a hint,

Helmut Jarausch

Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany