Hi, This should be simple, but never in my case. I want to zip pdf file. I am calling an external python file using dtml method. Here is file.py code ************************************************ def testzlib(): import zipfile import glob, os import zlib # open the zip file for writing, and write stuff to it file = zipfile.ZipFile("/usr/local/dc/Zope-2.3.0-src/pdffiles/test1.zip", "w") for name in glob.glob("/usr/local/dc/Zope-2.3.0-src/ Extensions/img/*"): file.write(name, os.path.basename(name), zipfile.ZIP_DEFLATED) file.close() ******************************************************* I am getting following error message Error Type: AttributeError Error Value: Z_DEFAULT_COMPRESSION I replaced Z_DEFAULT_COMPRESSION with 6, and got this error Error Type: AttributeError Error Value: crc32 I am using python1.5.2 and Zope2.3.0 Thanks Vid __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/