zipfile 2GB problems?

[xamdam]

On Jul 15, 5:39 pm, Steve Holden <st... at holdenweb.com> 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"