Re: zipfile 2GB problems?

On Jul 16, 3:39 pm, Steve Holden <st...@xxxxxxxxxxxxx> wrote:
xamdam wrote:
On Jul 15, 5:39 pm, Steve Holden <st...@xxxxxxxxxxxxx> wrote:
xamdam wrote:
Additional info: my file is from a data provider, do not know what
they used to compress it. Previous files worked ok, this one is the
1st over 2GB. Winzip has no problem with it.
It could be you are using a Python with an in-built limit of 2GB on file
size. What happens if you open the file, seek past the 2GB point and
then try and read data?
Steve,
I used is_zipfile function, which from does exactly that from a quick
read - goes to the end, reads expected string. It worked fine. Tried
regular Windows 2.4.4 and 2.5.1, same result.
Fine, if it isn't file size limitations I suspect you need to post some
code and a traceback so we can get better insight into exactly what the
problem is.

It's failing in the ZipFile constructor, which ends up throwing

zipfile(2.4.3).py:291> raise BadZipfile, "Bad magic number for file
header"

Well, that one bald line by itself certainly doesn't give *me* any
traction an what the problem might be. Getting information about this
problem is like (i.e. as difficult as) pulling teeth!

regards
Steve

Well, Steve, I don't know what else to tell you - I certainly do not
want to cause you tooth ache! I was sort of hoping for some ZIP expert
to go, 'oh, yeah'...

.

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