If you've installed a library such as python-grok using pip, you can simply add it to your PYTHONPATH in the Jython Processor.
For example:
import sys
sys.path.append('/path/to/installed/python-grok')
Then you should be able to import it
from grok import Grok
grok = Grok()
To find the path to the installed packages on your computer use this command :
>>> import site; site.getsitepackages()
