[Python-ideas] Adding ziplib (original) (raw)

Victor Stinner victor.stinner at gmail.com
Mon Feb 23 00:51:45 CET 2015

For simple use cases, there is shutil: https://docs.python.org/dev/library/shutil.html#archiving-operations

Victor Le 17 févr. 2015 00:11, "Ryan Gonzalez" <rymg19 at gmail.com> a écrit :

Python has support for several compression methods, which is great...sort of.

Recently, I had to port an application that used zips to use tar+gzip. It sucked. Why? Inconsistency. For instance, zipfile uses write to add files, tar uses add. Then, tar has addfile (which confusingly does not add a file), and zip has writestr, for which a tar alternative has been proposed on the bug tracker <http://bugs.python.org/issue22208> but hasn't had any activity for a while. Then, zipfile and tarfile's extract methods have slightly different arguments. Zipinfo has namelist, and tarfile as getnames. It's all a mess. The idea is to reorganize Python's zip support just like the sha and md5 modules were put into the hashlib module. Name? ziplib. It would have a few ABCs: - an ArchiveFile class that ZipFile and TarFile would derive from. - a BasicArchiveFile class that ArchiveFile extends. bz2, lzma, and (maybe) gzip would be derived from this one. - ArchiveFileInfo, which ZipInfo and TarInfo would derive from. ArchiveFile and ArchiveFileInfo go hand-in-hand. Now, the APIs would be more consistent. Of course, some have methods that others don't have, but the usage would be easier. zlib would be completely separate, since it has its own API and all. I'm not quite sure how gzip fits into this, since it has a very minimal API. Thoughts? -- Ryan If anybody ever asks me why I prefer C++ to C, my answer will be simple: "It's becauseslejfp23(@#Q*(E*EIdc-SEGFAULT. Wait, I don't think that was nul-terminated." Personal reality distortion fields are immune to contradictory evidence. - srean Check out my website: http://kirbyfan64.github.io/

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