显示价格

Question

我得到不同货币的价格,并希望显示巴西R $我的格式不起作用,显示如下:

价格:1.15..000.,00 R $

为了获得良好的灵活性,我将价格存储为字符串: price=db.StringProperty(verbose_name="price")

我试图实现我自己的过滤器,它不起作用: {{ ad.price|separate }} R$

def separate(n, sep='.'):
    ln = list(str(n))
    ln.reverse()
    newn = []
    while len(ln) > 3:
        newn.extend(ln[:3])
        newn.append(sep)
        ln = ln[3:]
    newn.extend(ln)
    newn.reverse()
    return "".join(newn)

你能帮助我吗？我应该删除过滤器吗？我应该对输入执行一些正则表达式吗？我网站的链接是http://www.koolbusiness.com/servead/4252196

更新:我正在考虑使用像这些过滤器之一:

import locale
locale.setlocale(locale.LC_ALL, '')

def currency(value): # doesn't work
    locale.setlocale(locale.LC_ALL, '')
    return locale.currency(value, grouping=True)

register.filter(currency)


def currencyWithoutUsingLocale(value): # needs adjustment
    value=float(value)
    symbol = '$' 
    thousand_sep = ''
    decimal_sep = ''
    # try to use settings if set 
    try:
        symbol = settings.CURRENCY_SYMBOL
    except AttributeError:
        pass

    try:
        thousand_sep = settings.THOUSAND_SEPARATOR
        decimal_sep = settings.DECIMAL_SEPARATOR
    except AttributeError:
        thousand_sep = ',' 
        decimal_sep = '.' 

    intstr = str(int(value))
    f = lambda x, n, acc=[]: f(x[:-n], n, [(x[-n:])]+acc) if x else acc
    intpart = thousand_sep.join(f(intstr, 3))
    return "%s%s%s%s" % (symbol, intpart, decimal_sep, ("%0.2f" % value)[-2:])

register.filter(currencyWithoutUsingLocale)

Answer 1

将价格存储为字符串是第一个问题.它应该是一个十进制.如果你查看Decimal的Python标准库文档,你会看到这个http://docs.python.org/library/decimal.html#recipes

moneyfmt食谱应该做你想要的