Quickly look up conversion rates (GSOC, VISA, PLN, USD, 3% bank fee)

gsoc_visa_exchange.py

#!/usr/bin/env python
import requests
from datetime import date
import re


def main():
    url1 = "http://corporate.visa.com/pd/consumer_services/consumer_ex_rates.jsp"
    url2 = "http://corporate.visa.com/pd/consumer_services/consumer_ex_results.jsp"

    session = requests.session()
    session.get(url1)

    today = date.today()
    data = dict(homCur="USD", forCur="PLN", fee="3", rate="0",
                date=today.strftime("%m/%d/%Y"),
                actualDate=today.strftime("%m-%d-%Y"))

    result = session.post(url2, data=data)
    result = re.findall(r'<span class="results">.*<b>.*</b>.*<b>(.+)</b>.*</span>',
                        result.content,
                        re.U | re.I)
    return float(result[0])


if __name__ == "__main__":
    pln_usd = main()
    usd_pln = pln_usd ** (-1)
    print "1 PLN = %f USD" % pln_usd
    print "1 USD = %f PLN" % usd_pln