#Demonstrating reading a webpage, and then finding the information we
#are interested in using regular expressions.
#

import urllib.request
from re import findall

#Read the webpage:
response = urllib.request.urlopen("http://www.wsbtv.com/s/weather")
html = response.read()
text = html.decode()

#Use regular expressions to find the data we want, which looks like: 
#   "NN&deg;</span>" where the NN is replaced with digits.
# Note that on extremely hot days it could be NNN and on extremely
# cold days it could be just N.

dataCrop = findall("[0-9]+&deg;</span>", text)
print("The data cropped out of the webpage is:", dataCrop)

if len(dataCrop) != 5:
   print("We have a problem parsing the data! Help!")
else:
   #Get just the digits
   temp = findall("[0-9]+", dataCrop[0]) 
   intTemp = int( temp[0] )
   cTemp = 5/9 * (intTemp-32)
   print("F temp is:", intTemp)
   print("C temp is:", cTemp)