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  1. get_currency_name
  2. get_currency_symbol
  3. get_decimal_symbol
  4. get_plus_sign_symbol
  5. get_minus_sign_symbol
  6. get_exponential_symbol
  7. get_group_symbol
  8. format_number
  9. format_decimal
  10. format_currency
  11. format_percent
  12. format_scientific
  13. NumberFormatError
    1. parse_number
    2. parse_decimal
    3. split_number
    4. bankersround
    5. parse_pattern
    6. NumberPattern
      1. apply

babel.numbers

Locale dependent formatting and parsing of numeric data.

The default locale for the functions in this module is determined by the following environment variables, in that order:

  • LC_NUMERIC,
  • LC_ALL, and
  • LANG

get_currency_name(currency, locale=LC_NUMERIC)

Return the name used by the locale for the specified currency.

>>> get_currency_name('USD', 'en_US')
u'US Dollar'
param currency:the currency code
param locale:the Locale object or locale identifier
return:the currency symbol
rtype:unicode
since:version 0.9.4

get_currency_symbol(currency, locale=LC_NUMERIC)

Return the symbol used by the locale for the specified currency.

>>> get_currency_symbol('USD', 'en_US')
u'$'
param currency:the currency code
param locale:the Locale object or locale identifier
return:the currency symbol
rtype:unicode

get_decimal_symbol(locale=LC_NUMERIC)

Return the symbol used by the locale to separate decimal fractions.

>>> get_decimal_symbol('en_US')
u'.'
param locale:the Locale object or locale identifier
return:the decimal symbol
rtype:unicode

get_plus_sign_symbol(locale=LC_NUMERIC)

Return the plus sign symbol used by the current locale.

>>> get_plus_sign_symbol('en_US')
u'+'
param locale:the Locale object or locale identifier
return:the plus sign symbol
rtype:unicode

get_minus_sign_symbol(locale=LC_NUMERIC)

Return the plus sign symbol used by the current locale.

>>> get_minus_sign_symbol('en_US')
u'-'
param locale:the Locale object or locale identifier
return:the plus sign symbol
rtype:unicode

get_exponential_symbol(locale=LC_NUMERIC)

Return the symbol used by the locale to separate mantissa and exponent.

>>> get_exponential_symbol('en_US')
u'E'
param locale:the Locale object or locale identifier
return:the exponential symbol
rtype:unicode

get_group_symbol(locale=LC_NUMERIC)

Return the symbol used by the locale to separate groups of thousands.

>>> get_group_symbol('en_US')
u','
param locale:the Locale object or locale identifier
return:the group symbol
rtype:unicode

format_number(number, locale=LC_NUMERIC)

Return the given number formatted for a specific locale.

>>> format_number(1099, locale='en_US')
u'1,099'
param number:the number to format
param locale:the Locale object or locale identifier
return:the formatted number
rtype:unicode

format_decimal(number, format=None, locale=LC_NUMERIC)

Return the given decimal number formatted for a specific locale.

>>> format_decimal(1.2345, locale='en_US')
u'1.234'
>>> format_decimal(1.2346, locale='en_US')
u'1.235'
>>> format_decimal(-1.2346, locale='en_US')
u'-1.235'
>>> format_decimal(1.2345, locale='sv_SE')
u'1,234'
>>> format_decimal(12345, locale='de')
u'12.345'

The appropriate thousands grouping and the decimal separator are used for each locale:

>>> format_decimal(12345.5, locale='en_US')
u'12,345.5'
param number:the number to format
param format:
param locale:the Locale object or locale identifier
return:the formatted decimal number
rtype:unicode

format_currency(number, currency, format=None, locale=LC_NUMERIC)

Return formatted currency value.

>>> format_currency(1099.98, 'USD', locale='en_US')
u'$1,099.98'
>>> format_currency(1099.98, 'USD', locale='es_CO')
u'US$\xa01.099,98'
>>> format_currency(1099.98, 'EUR', locale='de_DE')
u'1.099,98\xa0\u20ac'

The pattern can also be specified explicitly:

>>> format_currency(1099.98, 'EUR', u'¤¤ #,##0.00', locale='en_US')
u'EUR 1,099.98'
param number:the number to format
param currency:the currency code
param locale:the Locale object or locale identifier
return:the formatted currency value
rtype:unicode

format_percent(number, format=None, locale=LC_NUMERIC)

Return formatted percent value for a specific locale.

>>> format_percent(0.34, locale='en_US')
u'34%'
>>> format_percent(25.1234, locale='en_US')
u'2,512%'
>>> format_percent(25.1234, locale='sv_SE')
u'2\xa0512\xa0%'

The format pattern can also be specified explicitly:

>>> format_percent(25.1234, u'#,##0\u2030', locale='en_US')
u'25,123\u2030'
param number:the percent number to format
param format:
param locale:the Locale object or locale identifier
return:the formatted percent number
rtype:unicode

format_scientific(number, format=None, locale=LC_NUMERIC)

Return value formatted in scientific notation for a specific locale.

>>> format_scientific(10000, locale='en_US')
u'1E4'

The format pattern can also be specified explicitly:

>>> format_scientific(1234567, u'##0E00', locale='en_US')
u'1.23E06'
param number:the number to format
param format:
param locale:the Locale object or locale identifier
return:value formatted in scientific notation.
rtype:unicode

NumberFormatError

Exception raised when a string cannot be parsed into a number.

parse_number(string, locale=LC_NUMERIC)

Parse localized number string into a long integer.

>>> parse_number('1,099', locale='en_US')
1099L
>>> parse_number('1.099', locale='de_DE')
1099L

When the given string cannot be parsed, an exception is raised:

>>> parse_number('1.099,98', locale='de')
Traceback (most recent call last):
    ...
NumberFormatError: '1.099,98' is not a valid number
param string:the string to parse
param locale:the Locale object or locale identifier
return:the parsed number
rtype:long
raise NumberFormatError:
 if the string can not be converted to a number

parse_decimal(string, locale=LC_NUMERIC)

Parse localized decimal string into a float.

>>> parse_decimal('1,099.98', locale='en_US')
1099.98
>>> parse_decimal('1.099,98', locale='de')
1099.98

When the given string cannot be parsed, an exception is raised:

>>> parse_decimal('2,109,998', locale='de')
Traceback (most recent call last):
    ...
NumberFormatError: '2,109,998' is not a valid decimal number
param string:the string to parse
param locale:the Locale object or locale identifier
return:the parsed decimal number
rtype:float
raise NumberFormatError:
 if the string can not be converted to a decimal number

split_number(value)

Convert a number into a (intasstring, fractionasstring) tuple

bankersround(value, ndigits=0)

Round a number to a given precision.

Works like round() except that the round-half-even (banker's rounding) algorithm is used instead of round-half-up.

>>> bankersround(5.5, 0)
6.0
>>> bankersround(6.5, 0)
6.0
>>> bankersround(-6.5, 0)
-6.0
>>> bankersround(1234.0, -2)
1200.0

parse_pattern(pattern)

Parse number format patterns

NumberPattern

(Not documented)

apply(self, value, locale, currency=None)

(Not documented)

See ApiDocs, Documentation