[Zope] contents of File as string: acquisition wrapper problem

[Tino Wildenhain]

Hi,

Am Fr, den 27.08.2004 schrieb John Hunter um 22:08:
> What is the proper way to get the contents of a File as a string from
> the python API?
> 
> I am doing 
> 
>         zip = zipfile.ZipFile(tmpfile, 'w')
> 
>         for fileo in self._subfileFolder.objectValues('File'):
>             fname = fileo.getId()
>             zip.writestr(fname, fileo.data)
>         zip.close()
> 
> But the call to writestr raises
> 
> 
> Error Type: TypeError
> Error Value: crc32() argument 1 must be string or read-only buffer, not ImplicitAcquirerWrapper
> 
> Traceback (innermost last):
> 
>     * Module ZPublisher.Publish, line 101, in publish
>     * Module ZPublisher.mapply, line 88, in mapply
>     * Module ZPublisher.Publish, line 39, in call_object
>     * Module Products.irbworkflow.CRCFlow, line 1603, in all_zipped
>     * Module zipfile, line 460, in writestr
> 
> TypeError: crc32() argument 1 must be string or read-only buffer, not ImplicitAcquirerWrapper
> 
>   
> So it appears data is wrapped by the acquisition machinery.
> 
> Any ideas?

put str() around the fileo.data or use the objects read() method IIRC.

Regards
Tino