Pure Python version of fix for KM PDEs (and other affected printer makes). Works around sandboxing restrictions in Mavericks that affect non-compliant Print Dialog Extensions.

Generic Mavericks PDE security workaround

#!/usr/bin/python
import os
import sys
import plistlib
import json
import fnmatch
 
basepath = '/Library/Printers'
for root, dirs, files in os.walk(basepath):
     if fnmatch.fnmatch(root, "*PDE*"):
         for file in files:
                 if file.endswith('Info.plist'):
                     infoplist = os.path.join(root, file)
                     plist = plistlib.readPlist(infoplist)
                     if 'PMSandboxCompatiblePDEs' not in plist:
                         plist['PMSandboxCompatiblePDEs'] = True
                         plistlib.writePlist(plist, infoplist)