Bugs item #1527974, was opened at 2006-07-24 23:00 Message generated for change (Comment added) made by arve_knudsen You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1527974&group_id=5470
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Python Library Group: Python 2.4 Status: Open Resolution: None Priority: 5 Submitted By: Arve Knudsen (arve_knudsen) Assigned to: Nobody/Anonymous (nobody) Summary: tarfile chokes on ipython archive on Windows Initial Comment: I'm trying to extract files from the latest ipython tar archive, available from http://ipython.scipy.org/dist/ipython-0.7.2.tar.gz, using tarfile. This is on Windows XP, using Python 2.4.3. There is only a problem if I open the archive in stream mode (the "mode" argument to tarfile.open is "r|gz"), in which case tarfile raises StreamError. I'd be happy if this error could be sorted out. The following script should trigger the error: import tarfile f = file(r"ipython-0.7.2.tar.gz", "rb") tar = tarfile.open(fileobj=f, mode="r|gz") try: for m in tar: tar.extract(m) finally: tar.close() f.close( The resulting exception: Traceback (most recent call last): File "tst.py", line 7, in ? tar.extract(m) File "C:\Program Files\Python24\lib\tarfile.py", line 1335, in extract self._extract_member(tarinfo, os.path.join(path, tarinfo.name)) File "C:\Program Files\Python24\lib\tarfile.py", line 1431, in _extract_member self.makelink(tarinfo, targetpath) File "C:\Program Files\Python24\lib\tarfile.py", line 1515, in makelink self._extract_member(self.getmember(linkpath), targetpath) File "C:\Program Files\Python24\lib\tarfile.py", line 1423, in _extract_member self.makefile(tarinfo, targetpath) File "C:\Program Files\Python24\lib\tarfile.py", line 1461, in makefile copyfileobj(source, target) File "C:\Program Files\Python24\lib\tarfile.py", line 158, in copyfileobj shutil.copyfileobj(src, dst) File "C:\Program Files\Python24\lib\shutil.py", line 22, in copyfileobj buf = fsrc.read(length) File "C:\Program Files\Python24\lib\tarfile.py", line 551, in _readnormal self.fileobj.seek(self.offset + self.pos) File "C:\Program Files\Python24\lib\tarfile.py", line 420, in seek raise StreamError, "seeking backwards is not allowed" tarfile.StreamError: seeking backwards is not allowed ---------------------------------------------------------------------- >Comment By: Arve Knudsen (arve_knudsen) Date: 2006-07-25 10:04 Message: Logged In: YES user_id=1522083 Ok, I've verified now that the problem persists with Python 2.4.4 (from the 2.4 branch in svn). The exact same thing happens. ---------------------------------------------------------------------- Comment By: Arve Knudsen (arve_knudsen) Date: 2006-07-25 09:29 Message: Logged In: YES user_id=1522083 Well yeah, it appears to be Windows specific. I just tested on Linux (Ubuntu), also with Python 2.4.3. I'll try 2.4.3+ on Windows to see if it makes any difference. Come to think of it I think I experienced this problem in that past on Linux, but then I solved it by repacking ipython. Also, if I pack it myself on Windows using bsdtar it works fine. ---------------------------------------------------------------------- Comment By: Neal Norwitz (nnorwitz) Date: 2006-07-25 05:35 Message: Logged In: YES user_id=33168 I tested this on Linux with both 2.5 and 2.4.3+ without problems. I believe there were some fixes in this area. Could you try testing with the 2.4.3+ current which will become 2.4.4 (or 2.5b2)? If this is still a problem, it looks like it may be Windows specific. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1527974&group_id=5470 _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
