# Jay Summet
# CS 1803 Example Program
# Copyright 2010
#
#This program demonstrates downloading an XML file and
#immediately parsing it using the ElementTree xml module.
#
#We extract several pieces of weather information and then write them
#to a webpage.
import xml.etree.ElementTree as etree #for XML parsing
import urllib.request #For URL Downloading
#This function will return a tuple of weather data for a particular
#NOAA weather station, as specified by the four leter station code given
#as a string. (e.g. Atlanta's Airport is "KFTY")
# The tuple of data contains the following items:
# 0 - Location
# 1 - Temperature (c & f)
# 2 - Relative Humidity
# 3 - URL to web icon
# 4 - URL to two day history
def getWeather(stationCode):
url = "http://www.weather.gov/data/current_obs/" + stationCode +".xml"
response = urllib.request.urlopen(url)
tree = etree.parse(response)
root = tree.getroot()
locationString = None
tempString = None
relativeHumidity = None
iconURL = None
twoDayURL = None
locItem = root.find("location")
locationString = locItem.text
tempItem = root.find("temperature_string")
tempString = tempItem.text
rhItem = root.find("relative_humidity")
relativeHumidity = rhItem.text
ibItem = root.find("icon_url_base")
icItem = root.find("icon_url_name")
iconURL = ibItem.text + icItem.text
tdItem = root.find("two_day_history_url")
twoDayURL = tdItem.text
return( (locationString, tempString, relativeHumidity, iconURL, twoDayURL) )
#This function will create a website that lists the weather
#at various locations. You give it the list of location codes
#and an output filename. It will call the getWeather function
#for each location, and export the data in an HTML table.
def createWebsite(weatherLocations, filename):
#Open the file for writing, and write out the static
#top of the webpage.
fOut = open(filename, "w")
fOut.write( """
Custom Weather Report
Your Custom Weather Report
| Icon (click for history) |
Location |
Temperature |
Relative Humidity |
""" )
#Write one row of data for each location
for location in weatherLocations:
weather = getWeather(location)
fOut.write("")
fOut.write('  | ' )
fOut.write("" + weather[0] + " | ")
fOut.write("" + weather[1] + " | ")
fOut.write("" + weather[2] + " | ")
fOut.write("
\n\n")
#After we write out the table of data, end the webpage...
fOut.write("
")
createWebsite( [ "KFTY", "KSEA", "KSFO", "KMCO", "KJFK", "KYKM",], "weatherWeb.html")
print("file written...")