%21Currency/py/Rates.py

# > !Currency.py.Rates/py

import pickle
import string
import time
import urllib


def load(cache):
    global _date, _rates
    c = open(cache, 'r')
    _date = pickle.load(c)
    _rates = pickle.load(c)
    c.close()


def update(url, cache, us, dollar):
    global _date, _rates
    rates = [(us, dollar, 1.0)]
    u = urllib.urlopen(url)
    c = open(cache, 'w')
    _date = time.strftime('%d %b %Y')
    while 1:
        l = u.readline()
        if l == '':
            break
        l = l[:-1]
        m = string.split(l, ' ', 1)
        rates.append(('', m[1], eval(m[0])))
    u.close()
    pickle.dump(_date, c, 1)
    _rates = rates
    pickle.dump(_rates, c, 1)
    c.close()


def currencies(format):
    return map(lambda rate, format = format:
               format % {'country': rate[0], 'currency': rate[1], 'rate': rate[2]},
               _rates)


def currency(format, i):
    return format % {'country': _rates[i][0], 'currency': _rates[i][1], 'rate': _rates[i][2]}


def date():
    return _date


def convert(currency, value):
    conversion = []
    base = float(value) / _rates[currency][2]
    for rate in _rates:
        conversion.append(base * rate[2])
    return conversion
1	# > !Currency.py.Rates/py
2
3	import pickle
4	import string
5	import time
6	import urllib
7
8
9	def load(cache):
10	global _date, _rates
11	c = open(cache, 'r')
12	_date = pickle.load(c)
13	_rates = pickle.load(c)
14	c.close()
15
16
17	def update(url, cache, us, dollar):
18	global _date, _rates
19	rates = [(us, dollar, 1.0)]
20	u = urllib.urlopen(url)
21	c = open(cache, 'w')
22	_date = time.strftime('%d %b %Y')
23	while 1:
24	l = u.readline()
25	if l == '':
26	break
27	l = l[:-1]
28	m = string.split(l, ' ', 1)
29	rates.append(('', m[1], eval(m[0])))
30	u.close()
31	pickle.dump(_date, c, 1)
32	_rates = rates
33	pickle.dump(_rates, c, 1)
34	c.close()
35
36
37	def currencies(format):
38	return map(lambda rate, format = format:
39	format % {'country': rate[0], 'currency': rate[1], 'rate': rate[2]},
40	_rates)
41
42
43	def currency(format, i):
44	return format % {'country': _rates[i][0], 'currency': _rates[i][1], 'rate': _rates[i][2]}
45
46
47	def date():
48	return _date
49
50
51	def convert(currency, value):
52	conversion = []
53	base = float(value) / _rates[currency][2]
54	for rate in _rates:
55	conversion.append(base * rate[2])
56	return conversion