View source for CSC111 How cold is it in England?

--[[User:Thiebaut|D. Thiebaut]] 22:57, 12 December 2011 (EST)
----

<source lang="python">
# 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 getCity( 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 main():
    # 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 = getCity( cityFile )
    print( text )

main()

</source>
<br />
<br />
<onlydft>
=Alternate URL=

* http://cs.smith.edu/dftwiki/DFT/climate/uk/stationdata/

=Better Developed Program=
<source lang="python">
import urllib.request
import sys

URL = "http://cs.smith.edu/~111a/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 getCity( cityName ):
   global URL
   #print( "Getting list from ", url )
   f = urllib.request.urlopen( URL + cityName )
   bytes = f.read()
   htmlText  = bytes.decode( "utf8" )
   return htmlText


def findEarliestDate( text ):
    earliest = 3000
    for line in text.split( '\n' ):
        #print( line )
        try:
            if line[0] != ' ':
                continue
        except:
            continue
        fields = line.split()
        try:
            earliest = min( earliest, eval( fields[0] ) )
        except  NameError:
            continue
    return earliest
            
def main():
    print( "What city are you interested in? " )
    print( "Choices are: ", ", ".join( cities.keys() ) )

    while True:
        city = input( "> " )
        if city in cities.keys():
            break
        print( "Sorry,", city,"is not a valid city name" )

    cityFile = cities[ city ]
    text = getCity( cityFile )
    #print( text )
    print( "earliest recorded date = ", findEarliestDate( text ) )

def main2():
    earliestDico = {}
    
    for city in cities.keys():
        #print( city )
        text = getCity( cities[ city ] )
        earliest = findEarliestDate( text )
        #print( earliest )
        earliestDico[ city ] = earliest
        print( ".", end="" )

    print()

    earliest = list( earliestDico.values() )[0]
    for city in earliestDico.keys():
        earliest = min( earliest, earliestDico[ city ] )
        print( city, earliestDico[ city ] )

    print( "Earliest recorded date: ", earliest )
        
main2()

    

</source>
<br />
<br />


   
</onlydft>
<br />
<br />
<br />
<br />

<br />
[[Category:CSC111]][[Category:Python]]