Merge two zip files using python

Question

I'm trying to merge two zip files using python.

I had it working, until I realised that it wasn't behaving when it came to the symbolic links that the source zip file contained. Since I was using zipfile.read() on each file when I was adding it to the new zip file, it was reading the symlink and creating a text file, not a symlink.

Does anyone know of a way to get python to preserve the symlink's from the source zip file when I'm writing them to the target zip file?

Thanks.

When you say merge the two zip files, do you mean zip file A's contents and zip files B's distinct contents into a single zip file? What happens when the same file exists in both? What is the broader goal that requires merging two zip files? — Ryan Gates
– Ryan Gates, Commented Oct 22, 2012 at 19:05

Ben · Accepted Answer · 2012-10-24 14:52:26Z

2

This is how it should be done :

      if os.path.islink(filePath):
            attr = zipfile.ZipInfo(filePath)
            attr.create_system = 3 # 3 for unix, 0 for windoze
            attr.external_attr = 2716663808L # to include file as a symlink
            newZip.writestr(attr, os.readlink(filePath))

answered Oct 24, 2012 at 14:52

Ben

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