On Thu, 15 Apr 2021 at 07:15, Robert Kern <robert.k...@gmail.com> wrote:
> On Wed, Apr 14, 2021 at 4:37 PM Joachim Wuttke <j.wut...@fz-juelich.de> > wrote: > >> Regarding numpy, I'd propose a bolder measure: >> To let savetxt(fname, X, ...) store exactly the same information in >> compressed and uncompressed files, always invoke gzip with mtime = 0. >> > > I agree. > I might look into making a PR for this. To be clear what would the desired functionality be: 1. Mandatory to have mtime = 0? 2. Default mtime = 0, but `np.save*` has an extra `mtime` kwd that allows to set the mtime? 3. Default mtime = time.time(), but `np.save*` has an extra `mtime` kwd that allows to set the mtime = 0? As Joachim says for testing/git-related purposes it is nice to have bit-wise unchanged files produced (such that the file-hash is unchanged), but I can also see that it might be nice to have a modification time when files contained in a zip file were last changed (e.g. write with numpy, check/inspect with a different module). Of course with the latter you could just look at the overall file-write date, they should be the same.
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