Extracting a file from a tarball

[Boudreau, Emile]

Your hint of checking "tar.getnames()" was exatly what I needed. It
returns the path to where the file will be extracted (ie.
Src/ver/qfw/symbols.xml). After knowing this fact it was quite simple to
extract the file.

Thanks, problem solved!!!

Emile Boudreau
x5754

-----Original Message-----
From: python-list-bounces+emile.boudreau=cognos.com at python.org
[mailto:python-list-bounces+emile.boudreau=cognos.com at python.org] On
Behalf Of Carsten Haese
Sent: Tuesday, April 03, 2007 1:42 PM
To: python-list at python.org
Subject: Re: Extracting a file from a tarball

On Tue, 2007-04-03 at 13:26 -0400, Boudreau, Emile wrote:
> I am trying to extract one file from a tarball, without success. This 
> is the code I'm using to open the tarball and extract the file:
> 
> tar = tarfile.open(component+'-win32-app-'+bestVersion+'-dev.tar.gz',
> 'r')
> extractedFile = tar.extractfile('symbols.xml')
> 
> And this is my error:
> 
> Traceback (most recent call last): 
>   File "C:\CognosInstalls\AutoTest\PollDir.py", line 121, in <module> 
>     main() 
>   File "C:\CognosInstalls\AutoTest\PollDir.py", line 119, in main 
>     extract('c:\\', 'I:\\daily\\'+components[i], components[i]) 
>   File "C:\CognosInstalls\AutoTest\PollDir.py", line 27, in extract 
>     filelike = tar.extractfile('symbols.xml') 
>   File "C:\Python25\lib\tarfile.py", line 1488, in extract 
>     tarinfo = self.getmember(member) 
>   File "C:\Python25\lib\tarfile.py", line 1171, in getmember 
>     raise KeyError("filename %r not found" % name)
> KeyError: "filename 'symbols.xml' not found"
> 
> I know that the tarball contants this file "symbols.xml"

What does tar.getnames() return?

-Carsten


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