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#1
May 6th, 2004, 11:33 AM
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unzip script
hello,
I would be more than very grateful if you could help me on this point: I'm trying to program a little script that downloads (through ftp) and unzips automatically my .tar.gz files. -What i manage: downoad and save on the disk -The problem: i know the file, where it is but don't know what instruction to do to untar and gunzip it... and of course save it again. If any of you has the solution you would be my python hero, thanks! bye
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#2
May 6th, 2004, 04:21 PM
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You can probably use the zlib and tarfile modules:
http://docs.python.org/lib/module-zlib.html http://docs.python.org/lib/module-tarfile.html Alternatively, you can build the command string and use os.system Code:
import os cmdstr = "tar -zxvf " + filename + " -C /some/path" os.system(cmdstr)
__________________
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#3
May 6th, 2004, 11:38 PM
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Theres an article in devsheds python section on Zipping - written by me
 - where this doesn't really apply fully to tar.gz the basic idea is the same so maybe it would be useful.http://www.devshed.com/c/a/Python/Python-UnZipped/ As for the FTP bit you should check out the ftplib module and or search this forum for FTp since the subject comes up every now and again  http://www.python.org/doc/2.3.3/lib/module-ftplib.html Hope this helps some, Mark. Last edited by netytan : May 6th, 2004 at 11:48 PM.
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#5
May 7th, 2004, 02:38 AM
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According to the docs, the tarfile module can open gzipped tar files directly, so you do not even need to mess around with the gzip module. You could download & save the tar.gz file with ftplib, then do:
(warning: untested code. Caveat Emptor) Code:
import tarfile
tar = tarfile.open('path/to/file', 'r:gz')
for member in tar.getmembers():
tar.extract(member, 'output/directory')
Note: the tarfile module was added in Python 2.3, so it will not work if you have an older version. Dave - The Developers' Coach Last edited by DevCoach : May 7th, 2004 at 02:47 AM.
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