Gabriel Genellina wrote: > En Sun, 11 Jan 2009 08:12:27 -0200, Barak, Ron <ron.ba...@lsi.com> > escribió: > >> I googled a bit, and found http://bugs.python.org/issue1355023. >> It seems that this patch implemented fuller seek() for GzipFile around >> November 2006 (including whence==2). >> Do I misunderstand and this patch was not actually implemented, >> namely, is seek(-n,2) not implemented in Python 2.5.2 ? >> >> The source of gzip.py on my system seems to suggest that negative >> seeks are supported: > > The source comments are misleading: "negative seeks" means seeking > backwards (towards the beginning of the file), not offset<0. > The second argument to seek (whence) was added in 2.6, and only accepts 0 > or 1; whence==2 isn't supported. > Specifically in the case of a zip file that means the whole entry would need to be expanded to allow such a seek to take place from the end of the file; hence there are good pragmatic reasons for the restriction.
regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
