On Wed, Jan 28, 2015 at 2:36 PM, Chris Angelico <ros...@gmail.com> wrote: > On Thu, Jan 29, 2015 at 5:53 AM, jesse <chat2je...@gmail.com> wrote: >> should not it be 1<<32 -1(4g)? >> >> normal zip archive format should be able to support 4g file. >> >> thanks > > 1<<31-1 is the limit for a signed 32-bit integer. You'd have to look > into the details of the zip file format to see whether that's the > official limit or not; it might simply be that some (un)archivers have > problems with >2GB files, even if the official stance is that it's > unsigned.
The bug in which zip64 support was added indicates that the value was indeed chosen as the limit of a signed 32-bit integer: http://bugs.python.org/issue1446489 -- https://mail.python.org/mailman/listinfo/python-list
