Fredrik Lundh wrote: > M.E.Farmer wrote: > >>I saw compression=0 and assumed that 1 would mean true, but no! >>zipfile.ZIP_DEFLATED = 8, defies logic, it is the only compression type >>why not accept any non zero as compression. > > "is the only compression type" ? quoting from the ZIP specification: > > compression method: (2 bytes) > (see accompanying documentation for algorithm descriptions) > 0 - The file is stored (no compression) > 1 - The file is Shrunk ... > 8 - The file is Deflated > 9 - Enhanced Deflating using Deflate64(tm) > 10 - PKWARE Data Compression Library Imploding > 11 - Reserved by PKWARE > 12 - File is compressed using BZIP2 algorithm > ( http://www.pkware.com/company/standards/appnote/appnote.txt ) > the current zipfile version only supports 0 and 8, but that doesn't mean that > future versions won't support other ZIP compressions. > For example, I am hoping I'll get method 12 into Python 2.5. Please don't use the unadorned numbers, however. Use zipfile.ZIP_STORE, zipfile.ZIP_DEFLATED, and (later) zipfile.ZIP_BZIP2. This way you can catch an exception when using an unimplemented compression format as you retrieve the compression code, rather than waiting to get into the midst of compression / decompression before getting a failure.
--Scott David Daniels [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
