[BangPypers] ReadError: opening tar file

[Sridhar Ratnakumar]

Hi Murugadoss,

Try Python 2.5.5 (the latest 2.5 release), and if this problem still
occurs, please report a bug at bugs.python.org with full steps to
reproduce, including the original tarfile as an attachment.

C:\Python25\Lib\tarfile.py is a pure Python module; so if you are
inclined, you may debug the problem yourself. Note that before the
`ReadError` is raised, three open methods (taropen, gzopen, bz2open)
are called .. and these in turn raise a fine-grained exception that
may give a hint as to what the cause of the problem is.

-srid

On Fri, Jun 4, 2010 at 3:45 AM, murugadoss <murugadoss2884 at gmail.com> wrote:
> Thank for the reply.
> The tar file is not corrupted, i am using the same file in 32-bit m/c and
> able to extract it. I have attached this output also with the mail.
> I am getting this problem only in 64-bit m/c.
>
> output from 32-bit m/c:
> tarfile.is_tarfile(tar)
> func <bound method type.gzopen of <class 'tarfile.TarFile'>>
> func1 <tarfile.TarFile object at 0xb7f028ac>
> True
>
> For reference i have tested the same in different systems.
> --
> Thanks & Regards
> V.Murugadoss
>
>
> On Fri, Jun 4, 2010 at 7:35 PM, Anand Balachandran Pillai <
> abpillai at gmail.com> wrote:
>
>> On Fri, Jun 4, 2010 at 11:27 AM, murugadoss <murugadoss2884 at gmail.com
>> >wrote:
>>
>> > Hello,
>> >
>> > I am trying to extract a tar file. while doing this i check the valid tar
>> > file using is_tarfile( ).
>> > It is working fine in a 32-bit linux machine with python 2.5.4 version
>> and
>> > when i try it out in a 64-bit linux pc, i end up saying file is
>> > invalid(false). This machine was using python 2.4 and now i have upgraded
>> > to
>> > 2.5.4 version and I am using python 2.5.4.
>> >
>> > I went through the library file, tarfile.py and found in is_tarfile(), is
>> > opening the tarfile using tarfile.open.
>> > >>>tar = /root/testtar.tar.gz
>> > >>> import tarfile
>> > >>> tarfile.is_tarfile(tar)
>> > False
>> > >>> tarfile.open(tar)
>> > Traceback (most recent call last):
>> >  File "<stdin>", line 1, in <module>
>> >  File "/usr/local/lib/python2.5/tarfile.py", line 1153, in open
>> >    raise ReadError("file could not be opened successfully")
>> > tarfile.ReadError: file could not be opened successfully
>> >
>>
>> I have a test tar file named f.tar.gz.
>>
>> >>> import tarfile
>> >>> tarfile.open('f.tar.gz')
>> <tarfile.TarFile object at 0x7f8a652fdad0>
>> >>> tarfile.is_tarfile('f.tar.gz')
>> True
>>
>> and for you,
>>
>> >>>tar = /root/testtar.tar.gz
>> >>> import tarfile
>> >>> tarfile.is_tarfile(tar)
>> False
>>
>> So your "tar file" is not a real tar file. No wonder it is failing
>> to open. Does it take rocket science to figure this out ?
>>
>>
>> >
>> > Can anyone please help me
>> >
>>
>> Yes, only you can help yourself now. Spend time learning!
>>
>>
>> >
>> > --
>> > Thanks & Regards
>> > V.Murugadoss
>> > _______________________________________________
>> > BangPypers mailing list
>> > BangPypers at python.org
>> > http://mail.python.org/mailman/listinfo/bangpypers
>> >
>>
>>
>>
>> --
>> --Anand
>> _______________________________________________
>> BangPypers mailing list
>> BangPypers at python.org
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>>
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