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I'd like to convert a couple thousand zip files to 7z, with maximum compression and multithreading enabled.

Also in another place. Like c:\temp\ to f:\converted\file.7z

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Nevermind, does the job just fine!

Edit: But hell, it takes way too long....

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And it also can't handle some zips that contain filenames in "bad" encodings like cp1251 or koi8r or something like that. – Sergey Jul 15 '13 at 10:09

I wrote a script in Python - You can run it with:


and it will create your_archive.7z near it.

Or you can install it on your system with make install (if you see the repo)

And just call:


It needs unzip and 7za programs.

You can modify it as you wish for your needs (and send me a pull request)

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