Rrd tool has been installed.
I try to run the script in the IDE: unsing mu I've the same error but using Geany it goes... so strange.
But now I've the following error running rdd_update from Geany
File "wr_rrd_update.py", line 17, in <module>
from indiclient import *
File "/usr/share/weatherradio/bin/indiclient.py", line 205, in <module>
import queue
ImportError: No module named queue

Could it be a problem about the python release uset (I've installed 2.7, 3.x)