EuroMonitor - get email notification about currency

Recently I was trying to convert some cash in EUR currency, but I did not have time to watch currency graph all the time. So, I have created small tool which will let me know via email when currency will get more expensive above some concrete level. You can put below script in cron to execute it with some time interval. I used Sparkpost as a email provider.

import urllib2
import json
from sparkpost import SparkPost

sp = SparkPost('YOUR_API_KEY')

def currencyConverter(currency_from,currency_to):
    yql_base_url = "https://query.yahooapis.com/v1/public/yql"
    yql_query = 'select%20*%20from%20yahoo.finance.xchange%20where%20pair%20in%20("'+currency_from+currency_to+'")'
    yql_query_url = yql_base_url + "?q=" + yql_query + "&format=json&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys"
    try:
        yql_response = urllib2.urlopen(yql_query_url)
        try:
            yql_json = json.loads(yql_response.read())
            currency_output = 1 * float(yql_json['query']['results']['rate']['Rate'])
            return currency_output
        except (ValueError, KeyError, TypeError):
            return "JSON format error"

    except IOError, e:
        if hasattr(e, 'code'):
            return e.code
        elif hasattr(e, 'reason'):
            return e.reason

currency_from = "EUR" # currency codes : http://en.wikipedia.org/wiki/ISO_4217
currency_to = "PLN"
direction_rate = 4.44

rate = currencyConverter(currency_from,currency_to)
print rate

if rate > direction_rate:
 response = sp.transmissions.send(
     recipients=['YOUR_EMAIL@gmail.com'],
     html='Rate of ' + currency_from + currency_to + ' equals ' + str(round(rate, 2)) + '

',
     from_email='test@sparkpostbox.com',
     subject='EuroMonitor'
 )

 print(response)
else:
   print "Rate too low"

Reference :
[1] EuroMonitor Source Code