How do I extract a tar file using python 2.4?

问题

I'm trying to extract a .tar file completely using python 2.4.2 and because of this not all of the aspects of the tarfile module are usable. I've looked through the python documentary and I have not found it to be helpful as I continue to make syntax errors. The following are commands I have tried(to no success):

tarfile.Tarfile.getnames(tarfile.tar)
tarfile.Tarfile.extract(tarfile.tar)

Is there a simple way to extract my tar completely? If so what is the formatting used? Also, I'd like to note that tarfile.TarFile.extractall() is not available in my python version.

回答1:

This example is from the tarfile docs.

import tarfile
tar = tarfile.open("sample.tar.gz")
tar.extractall()
tar.close()

First, a TarFile object is created using tarfile.open(), then all files are extracted using extractall() and finally the object is closed.

If you want to extract to a different directory, use extractall's path parameter:

tar.extractall(path='/home/connor/')

Edit: I see now that you are using an old Python version which doesn't have the TarFile.extractall() method. The documentation for older versions of tarfile confirms this. You can instead do something like this:

for member in tar.getmembers():
    print "Extracting %s" % member.name
    tar.extract(member, path='/home/connor/')

If your tar file has directories in it, this probably fails (I haven't tested it). For a more complete solution, see the Python 2.7 implementation of extractall

Edit 2: For a simple solution using your old Python version, call the tar command using subprocess.call

import subprocess
tarfile = '/path/to/myfile.tar'
path = '/home/connor'
retcode = subprocess.call(['tar', '-xvf', tarfile, '-C', path])
if retcode == 0:
    print "Extracted successfully"
else:
    raise IOError('tar exited with code %d' % retcode)

来源：https://stackoverflow.com/questions/31163668/how-do-i-extract-a-tar-file-using-python-2-4

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