On Wed, Apr 20, 2011 at 1:02 AM, Daniel Gerzo <dge...@gmail.com> wrote:
> On 20.4.2011 2:22, Julio Ona wrote: > >> Hi Daniel, >> >> you should see: >> http://docs.python.org/library/bz2.html#module-bz2 >> >> <http://docs.python.org/library/bz2.html#module-bz2>or >> http://docs.python.org/library/gzip.html#module-gzip >> > > Hello Juliom, thanks for reply. > > I have of course seen both of these before I sent the mail, unfortunately I > couldn't figure out how to use it on my InMemoryUploadedFile object. > > But basically you should import the compress function from the library >> and use it. >> >> <http://docs.python.org/library/gzip.html#module-gzip>from bz2 import >> >> compress >> >> [...] >> >> >> def handle_uploaded_subtitles(self, files): >> for file in files: >> sub_file = SubtitleFile(file_name=file.name, etc) >> bz_file = compress(file) >> > > I wish it would be that easy :-) > > What you are proposing fails with Exception: > > bzfile = compress(file) > argument 1 must be convertible to a buffer, not InMemoryUploadedFile > > Well, an InMemoryUploadedFile isn't a real file, so I'm not surprised that that doesn't work. You'll have to pull the data out of it, and compress that. Try something like this: def handle_uploaded_subtitles(self, files): for uploaded_file in files: sub_file = SubtitleFile(file_name=file.name, etc) data = bz2.compress(uploaded_file.read()) # Here I'm assuming that SubtitleFile.file is a real file object sub_file.file.write(data) sub_file.file.close() If your files are large, then you can read them in lines, or in chunks, and use a BZ2Compressor object to compress them one-at-a-time. Further, I wasn't able to find a method in the mentioned libraries that > would make this possible, or at least I didn't figure out how to pass an > InMemoryUploadedFile to them to compress it. > > When I try to do this: > > file.write(zlib.compress(file.read())) Don't do that -- I'm pretty sure that writing a file that you already have open for reading will produce undefined results. (Also, I'd try to stay away from using 'file' as a variable name -- it just hides the built-in file type name, and makes it hard to tell what, say, file.read refers to) -- Regards, Ian Clelland <clell...@gmail.com> -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
