module documentation

Undocumented

Exception UnknownUnitError Undocumented
Function format_compound_unit Format a compound number value, i.e. "kilometers per hour" or similar.
Function format_unit Format a value of a given unit.
Function get_unit_name Get the display name for a measurement unit in the given locale.
Function _find_compound_unit Find a predefined compound unit pattern.
Function _find_unit_pattern Expand an unit into a qualified form.
def format_compound_unit(numerator_value: float|decimal.Decimal, numerator_unit: str|None = None, denominator_value: float|decimal.Decimal = 1, denominator_unit: str|None = None, length: Literal['short', 'long', 'narrow'] = 'long', format: str|None = None, locale: (Locale|str)|None = LC_NUMERIC) -> str|None: (source)

Format a compound number value, i.e. "kilometers per hour" or similar. Both unit specifiers are optional to allow for formatting of arbitrary values still according to the locale's general "per" formatting specifier. >>> format_compound_unit(7, denominator_value=11, length="short", locale="pt") '7/11' >>> format_compound_unit(150, "kilometer", denominator_unit="hour", locale="sv") '150 kilometer per timme' >>> format_compound_unit(150, "kilowatt", denominator_unit="year", locale="fi") '150 kilowattia / vuosi' >>> format_compound_unit(32.5, "ton", 15, denominator_unit="hour", locale="en") '32.5 tons per 15 hours' >>> format_compound_unit(160, denominator_unit="square-meter", locale="fr") '160 par m\xe8tre carr\xe9' >>> format_compound_unit(4, "meter", "ratakisko", length="short", locale="fi") '4 m/ratakisko' >>> format_compound_unit(35, "minute", denominator_unit="fathom", locale="sv") '35 minuter per famn' >>> from babel.numbers import format_currency >>> format_compound_unit(format_currency(35, "JPY", locale="de"), denominator_unit="liter", locale="de") '35\xa0\xa5 pro Liter' See https://www.unicode.org/reports/tr35/tr35-general.html#perUnitPatterns :param numerator_value: The numerator value. This may be a string, in which case it is considered preformatted and the unit is ignored. :param numerator_unit: The numerator unit. See `format_unit`. :param denominator_value: The denominator value. This may be a string, in which case it is considered preformatted and the unit is ignored. :param denominator_unit: The denominator unit. See `format_unit`. :param length: The formatting length. "short", "long" or "narrow" :param format: An optional format, as accepted by `format_decimal`. :param locale: the `Locale` object or locale identifier :return: A formatted compound value.

def format_unit(value: float|decimal.Decimal, measurement_unit: str, length: Literal['short', 'long', 'narrow'] = 'long', format: str|None = None, locale: (Locale|str)|None = LC_NUMERIC) -> str: (source)

Format a value of a given unit. Values are formatted according to the locale's usual pluralization rules and number formats. >>> format_unit(12, 'length-meter', locale='ro_RO') u'12 metri' >>> format_unit(15.5, 'length-mile', locale='fi_FI') u'15,5 mailia' >>> format_unit(1200, 'pressure-millimeter-ofhg', locale='nb') u'1\xa0200 millimeter kvikks\xf8lv' >>> format_unit(270, 'ton', locale='en') u'270 tons' Number formats may be overridden with the ``format`` parameter. >>> import decimal >>> format_unit(decimal.Decimal("-42.774"), 'temperature-celsius', 'short', format='#.0', locale='fr') u'-42,8\u202f\xb0C' The locale's usual pluralization rules are respected. >>> format_unit(1, 'length-meter', locale='ro_RO') u'1 metru' >>> format_unit(0, 'length-mile', locale='cy') u'0 mi' >>> format_unit(1, 'length-mile', locale='cy') u'1 filltir' >>> format_unit(3, 'length-mile', locale='cy') u'3 milltir' >>> format_unit(15, 'length-horse', locale='fi') Traceback (most recent call last): ... UnknownUnitError: length-horse is not a known unit in fi .. versionadded:: 2.2.0 :param value: the value to format. If this is a string, no number formatting will be attempted. :param measurement_unit: the code of a measurement unit. Known units can be found in the CLDR Unit Validity XML file: https://unicode.org/repos/cldr/tags/latest/common/validity/unit.xml :param length: "short", "long" or "narrow" :param format: An optional format, as accepted by `format_decimal`. :param locale: the `Locale` object or locale identifier

def get_unit_name(measurement_unit: str, length: Literal['short', 'long', 'narrow'] = 'long', locale: (Locale|str)|None = LC_NUMERIC) -> str|None: (source)

Get the display name for a measurement unit in the given locale. >>> get_unit_name("radian", locale="en") 'radians' Unknown units will raise exceptions: >>> get_unit_name("battery", locale="fi") Traceback (most recent call last): ... UnknownUnitError: battery/long is not a known unit/length in fi :param measurement_unit: the code of a measurement unit. Known units can be found in the CLDR Unit Validity XML file: https://unicode.org/repos/cldr/tags/latest/common/validity/unit.xml :param length: "short", "long" or "narrow" :param locale: the `Locale` object or locale identifier :return: The unit display name, or None.

def _find_compound_unit(numerator_unit: str, denominator_unit: str, locale: (Locale|str)|None = LC_NUMERIC) -> str|None: (source)

Find a predefined compound unit pattern. Used internally by format_compound_unit. >>> _find_compound_unit("kilometer", "hour", locale="en") 'speed-kilometer-per-hour' >>> _find_compound_unit("mile", "gallon", locale="en") 'consumption-mile-per-gallon' If no predefined compound pattern can be found, `None` is returned. >>> _find_compound_unit("gallon", "mile", locale="en") >>> _find_compound_unit("horse", "purple", locale="en") :param numerator_unit: The numerator unit's identifier :param denominator_unit: The denominator unit's identifier :param locale: the `Locale` object or locale identifier :return: A key to the `unit_patterns` mapping, or None. :rtype: str|None

def _find_unit_pattern(unit_id: str, locale: (Locale|str)|None = LC_NUMERIC) -> str|None: (source)

Expand an unit into a qualified form. Known units can be found in the CLDR Unit Validity XML file: https://unicode.org/repos/cldr/tags/latest/common/validity/unit.xml >>> _find_unit_pattern("radian", locale="en") 'angle-radian' Unknown values will return None. >>> _find_unit_pattern("horse", locale="en") :param unit_id: the code of a measurement unit. :return: A key to the `unit_patterns` mapping, or None.