在Python中将数字格式化为货币

Question

我从Python中的货币格式学习,使用语言环境模块将数字格式化为货币.例如,

#! /usr/bin/env python
# -*- coding: utf-8 -*-

import locale

value = 123456789

l = locale.setlocale(locale.LC_ALL, '')     # LC_CTYPE=en_US.UTF-8;LC_NUMERIC=fr_FR.UTF-8;LC_TIME=fr_FR.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=fr_FR.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=fr_FR.UTF-8;LC_NAME=fr_FR.UTF-8;LC_ADDRESS=fr_FR.UTF-8;LC_TELEPHONE=fr_FR.UTF-8;LC_MEASUREMENT=fr_FR.UTF-8;LC_IDENTIFICATION=fr_FR.UTF-8
s = locale.currency(value, grouping=True)   # 123 456 789,00 €

locale.setlocale(locale.LC_ALL, 'en_US.utf-8') 
s = locale.currency(value, grouping=True)   # $123,456,789.00

locale.setlocale(locale.LC_ALL, 'en_US')    # WHY? locale.Error: unsupported locale setting
s = locale.currency(value, grouping=True)

比方说,我想将数字格式化为其他货币de_DE.我遇到了这个问题,locale.Error: unsupported locale setting因为语言环境de_DE不在列表中locale -a.

locale.setlocale(locale.LC_ALL, 'de_DE')        # locale.Error: unsupported locale setting
s = locale.currency(value, grouping=True)

一种解决方案是将此区域设置添加到我的计算机.有没有更好的办法？

Answer 1

babel.numbers

In [22]: from babel.numbers import format_decimal
In [23]:  format_decimal(12345, locale='de_DE')
Out[23]: u'12.345'

In [24]: format_decimal(1.2345, locale='sv_SE')
Out[24]: u'1,234'

或者在你的情况下format_currency:

In [7]: from babel.numbers import format_currency

In [8]: print format_currency(1099.98, 'USD', locale='en_US')
$1,099.98

In [9]: print format_currency(1099.98, 'USD', locale='es_CO')
1.099,98 US$

In [10]: print format_currency(1099.98, 'EUR', locale='de_DE')
1.099,98 €