----- Original Message ----- From: "John Hunter" <jdhunter@nitace.bsd.uchicago.edu>

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.

I use a module found in gzip.py which is (should be) part of your python install, it does all the hard work. Jonathan