Hadoop and Python: View Error

Hadoop and Python: View Error

I'm using Hadoop streaming to run some Python code. I have noticed that if
there is an error in my Python code (in mapper.py, for example), I won't
be notified about the error. Instead, the mapper program will fail to run,
and the job will be killed after a few seconds. Viewing the logs, the only
error I see is that mapper.py failed to run or was not found, which is
clearly not the case.
My question is, is there a specific log file I can check to see actual
errors that may exist in the mapper.py code? (For example, would tell me
if an import command failed)
Thank you!