CSC111 Cold England 2

--D. Thiebaut 11:24, 15 December 2011 (EST)

---

# ukTemperatures.py
# D. Thiebaut
# this code is undocumented and possibly not robust...
# Main site: http://www.metoffice.gov.uk/climate/uk/stationdata/
#
import urllib.request
import sys
 
URL = "http://cs.smith.edu/~111a/climate/uk/stationdata/"
ALTERNATE_URL = "http://cs.smith.edu/dftwiki/DFT/climate/uk/stationdata/"
 
cities = {'Ross-on-Wye' : 'rossonwyedata.txt',
          'Armagh'      : 'armaghdata.txt',
          'Leuchars'    : 'leucharsdata.txt',
          'Eskdalemuir' : 'eskdalemuirdata.txt',
          'Yeovilton'   : 'yeoviltondata.txt',
          'Valley'      : 'valleydata.txt',
          'Sutton Bonington': 'suttonboningtondata.txt',
          'Dunstaffnage': 'dunstaffnagedata.txt',
          'Shawbury'    : 'shawburydata.txt',
          'Paisley'     : 'paisleydata.txt',
          'Braemar'     : 'braemardata.txt',
          'Sheffield'   : 'sheffielddata.txt' }
 
def getCityInfo( fileName ):
   global URL
   print( "Getting list of temperatures from ", URL )
   f = urllib.request.urlopen( URL + fileName )
   bytes = f.read()
   htmlText  = bytes.decode( "utf8" )
   return htmlText
 
def getEarliest( text ):
   for line in text.split( '\n' ):
      if len( line )>1 and line[0]==' ':
         try:
            year = eval( line.split()[0] )
            return year
         except NameError:
            continue
   return None

      
def test():
    # prompt the user for a city name
    print( "What city are you interested in? " )
 
    # display list of cities (keys of dictionary) 
    print( "Choices are: ", ", ".join( cities.keys() ) )
 
    # keep on asking until city is recognized
    while True:
        city = input( "> " )
        if city in cities:
            break
        print( "Sorry,", city,"is not a valid city name" )
 
    # get text file associated with city
    cityFile = cities[ city ]
 
    # get Web page content
    text = getCityInfo( cityFile )
    print( '\n'.join( text.split('\n')[0:10] ) )
    year = getEarliest( text )
    print( "earliest = ", year )

def main():
   for city in cities.keys():
      year = getEarliest( getCityInfo( cities[ city ] ) )
      print( city, year )

      
main()

[[Category:CS