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headlines.py
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headlines.py
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import datetime
import feedparser
from flask import Flask
from flask import make_response
from flask import render_template
from flask import request
import json
import urllib2
import urllib
app = Flask(__name__)
RSS_FEEDS = {'bbc': 'http://feeds.bbci.co.uk/news/rss.xml',
'cnn': 'http://rss.cnn.com/rss/edition.rss',
'fox': 'http://feeds.foxnews.com/foxnews/latest',
'iol': 'http://www.iol.co.za/cmlink/1.640'}
DEFAULTS = {'publication': 'bbc',
'city': 'London,UK',
'currency_from': 'GBP',
'currency_to': 'USD'}
WEATHER_URL ="http://api.openweathermap.org/data/2.5/weather?q={}&units=metric&appid=60c4787a00029f2488c13c825bdbb417"
CURRENCY_URL ="https://openexchangerates.org//api/latest.json?app_id=26cfd753b1a545f8aed353b9bea14192"
def get_value_wit_fallback(key):
if request.args.get(key):
return request.args.get(key)
if request.cookies.get(key):
return request.cookies.get(key)
else:
return DEFAULTS[key]
@app.route("/")
def home():
# get customized headlines, based on user input or default
publication = get_value_wit_fallback('publication')
articles = get_news(publication)
# get customized weather based on user input or default
city = get_value_wit_fallback('city')
weather = get_weather(city)
# get customized currency based on user input or default
currency_from = get_value_wit_fallback('currency_from')
currency_to = get_value_wit_fallback('currency_to')
rate, currencies = get_rate(currency_from, currency_to)
response = make_response(render_template("home.html",
articles=articles,
weather=weather,
currency_from=currency_from,
currency_to=currency_to,
rate=rate,
currencies=sorted(currencies)))
expires = datetime.datetime.now() + datetime.timedelta(days=365)
response.set_cookie("publication", publication, expires=expires)
response.set_cookie("city", city, expires=expires)
response.set_cookie("currency_from",
currency_from, expires=expires)
response.set_cookie("currency_to", currency_to, expires=expires)
return response
def get_news(query):
if not query or query.lower() not in RSS_FEEDS:
publication = "bbc"
else:
publication = query.lower()
feed = feedparser.parse(RSS_FEEDS[publication])
return feed['entries']
def get_weather(query):
query = urllib.quote(query)
url = WEATHER_URL.format(query)
data = urllib2.urlopen(url).read()
parsed = json.loads(data)
weather = None
if parsed.get("weather"):
weather = {"description":parsed["weather"][0]["description"],
"temperature":parsed["main"]["temp"],
"city":parsed["name"],
"country":parsed["sys"]["country"]
}
return weather
def get_rate(frm, to):
all_currency = urllib2.urlopen(CURRENCY_URL).read()
parsed = json.loads(all_currency).get('rates')
frm_rate = parsed.get(frm.upper())
to_rate = parsed.get(to.upper())
return (to_rate/frm_rate, parsed.keys())
if __name__ == '__main__':
app.run(port=5000, debug=True)