On 01/31/12 07:41, Jason Friedman wrote:
Does Python 2.7's zipfile module use its own algorithm or does it
leverage the zip/unzip libraries that exist on the host? I ask
because my host's native unzip program cannot handle files that, when
unzipped, are larger than 2GB. Will using Python 2.7 get around this
limitation?
According to:
http://hg.python.org/cpython/file/5395f96588d4/Lib/zipfile.py#l669
I'm guessing that the ZIP64_LIMIT references the 2GB limit, and
Python's zipfile module requires you to instantiate with
zf = ZipFile(..., allosZip64=True)
The ZIP64_LIMIT = (1 << 31) - 1 which is 2GB. It appears this
was added in revision fd412a00a07d:
Patch #1446489 (zipfile: support for ZIP64)
which seems to have been implemented back in at least Python 2.5.
-tkc
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