Extract weather information (for conky)

weather.py

#!/usr/bin/python
# Usage for .conkyrc:
#   ${execi 15 ~/weather.py 40155}
import sys
import re
from urllib2 import urlopen

url = 'http://rss.wunderground.com/auto/rss_full/global/stations/'

station_id, = sys.argv[1:]
u = urlopen(url + station_id + '.xml?units=metric')

data = u.read()

m = re.search('CDATA\[(.*?)\]', data) # Extract current data
s, = m.groups()

s = re.sub('<img .*?>', '', s) # Remove images
s = s.replace('&deg;', '')     # Remove degree sign
s = s.replace(' | ', '\n')     # Split into lines

sys.stdout.write(s)