%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	james	12	# > !Currency.py.Rates/py
2
3			import pickle
4			import string
5	james	52	import time
6	james	12	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	james	52	_date = time.strftime('%d %b %Y')
23	james	12	while 1:
24			l = u.readline()
25	james	52	if l == '':
26	james	12	break
27	james	52	l = l[:-1]
28			m = string.split(l, ' ', 1)
29			rates.append(('', m[1], eval(m[0])))
30	james	12	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