[issue17681] Work with an extra field of gzip and zip files

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

I have an almost ready patch but I doubt about interface. It can be discussed. ZIP file entries have similar extra field and I'm planning to add similar feature to the zipfile module too.

Here are preliminary patches.

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keywords: +patch
title: Work with an extra field of gzip files -> Work with an extra field of gzip and zip files
Added file: http://bugs.python.org/file30411/gzip_extra.diff

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