def get_current_exchange_rate(src_currency, tgt_currency):
    """
		Access Google's free currency exchange API.

		Use the 3-char ISO currency codes to specify source and target currency.
		
		Usage:
		Convert $15.43USD to Euros:
		amt_in_euros = 15.43 * get_current_exchange_rate('USD', 'EUR')
	"""
    import urllib2
    response = urllib2.urlopen(
        'http://www.google.com/ig/calculator?hl=en&q=1%s=?%s' % (
        src_currency, tgt_currency))
    data = response.read()
    print(data)
    index = data.find('rhs: "') + 6
    working_str = data[index:]
    print(working_str)
    exchange_rate, discard_remainder = working_str.split(' ', 1)
    print(exchange_rate)
    return float(exchange_rate)
