The job scripts generated by galaxy contain following code. I was wondering 
what's the purpose of if-block after setting 'GALAXY_LIB="None"' assignment. 

{{{
GALAXY_LIB="None"
if [ "$GALAXY_LIB" != "None" ]; then
    if [ -n "$PYTHONPATH" ]; then
        PYTHONPATH="$GALAXY_LIB:$PYTHONPATH"
    else
        PYTHONPATH="$GALAXY_LIB"
    fi
    export PYTHONPATH
fi

}}}

--
Shantanu
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