__THE_PROCESS_HAS_FORKED_AND_YOU_CANNOT_USE_THIS_COREFOUNDATION_FUNCTIONALITY___YOU_MUST_EXEC__()

Hi all, Another thread mentioned pydoc, so I decided to look at it and ran 'pydoc modules'. Although it ran, it first returned a very strange error (a number of times): The process has forked and you cannot use this CoreFoundation functionality safely. You MUST exec(). Break on __THE_PROCESS_HAS_FORKED_AND_YOU_CANNOT_USE_THIS_COREFOUNDATION_FUNCTIONALITY___YOU_MUST_EXEC__ () to debug. I've seen this before when I run tkinter based python apps. But everything seems to work just fine. What is causing this error? Is it a problem? Can it be removed/fixed somehow? Thanks! Frank Schima NIST Boulder, CO schimaf@boulder.nist.gov