Issue:
Attempting to reference an installed Python package from within the Jython Evaluator stage results in the following error:
ImportError: No module named <package-name>
Solution:
SDC does not load all existing Python modules already installed to a host upon startup. Instead, any additional packages that need to be imported must first be appended to the PYTHONPATH known to SDC:
try:
sdc.importLock()
import sys
sys.path.append('/path/to/the/python/packages')
import <package-name>
finally:
sdc.importUnlock()
By importing the sys module, you can modify the PYTHONPATH via 'sys.path.append'. You can then import additional external Python packages that would otherwise not be picked up by the SDC JVM by default.