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num2words is a library that converts numbers like 42 to words like forty-two.
It supports multiple languages (see the list below for full list
of languages) and can even generate ordinal numbers like forty-second
(although this last feature is a bit buggy for some languages at the moment).
The project is hosted on GitHub_. Contributions are welcome.
.. _GitHub: https://github.com/savoirfairelinux/num2words
The easiest way to install num2words is to use pip::
pip install num2words
Otherwise, you can download the source package and then execute::
python setup.py install
The test suite in this library is new, so it's rather thin, but it can be run with::
python setup.py test
To run the full CI test suite which includes linting and multiple python environments::
pip install tox
tox
Command line::
$ num2words 10001
ten thousand and one
$ num2words 24,120.10
twenty-four thousand, one hundred and twenty point one
$ num2words 24,120.10 -l es
veinticuatro mil ciento veinte punto uno
$num2words 2.14 -l es --to currency
dos euros con catorce céntimos
In code there's only one function to use::
>>> from num2words import num2words
>>> num2words(42)
forty-two
>>> num2words(42, to='ordinal')
forty-second
>>> num2words(42, lang='fr')
quarante-deux
Besides the numerical argument, there are two main optional arguments, to: and lang:
to: The converter to use. Supported values are:
cardinal (default)ordinalordinal_numyearcurrencylang: The language in which to convert the number. Supported values are:
en (English, default)am (Amharic)ar (Arabic)az (Azerbaijani)by (Belarusian)cz (Czech)de (German)dk (Danish)en_GB (English - Great Britain)en_IN (English - India)en_NG (English - Nigeria)es (Spanish)es_CO (Spanish - Colombia)es_VE (Spanish - Venezuela)es_GT (Spanish - Guatemala)eu (EURO)fa (Farsi)fi (Finnish)fr (French)fr_CH (French - Switzerland)fr_BE (French - Belgium)fr_DZ (French - Algeria)he (Hebrew)hu (Hungarian)id (Indonesian)is (Icelandic)it (Italian)ja (Japanese)kn (Kannada)ko (Korean)kz (Kazakh)lt (Lithuanian)lv (Latvian)no (Norwegian)pl (Polish)pt (Portuguese)pt_BR (Portuguese - Brazilian)sl (Slovene)sr (Serbian)sv (Swedish)ro (Romanian)ru (Russian)te (Telugu)tg (Tajik)tr (Turkish)th (Thai)vi (Vietnamese)nl (Dutch)uk (Ukrainian)You can supply values like fr_FR; if the country doesn't exist but the
language does, the code will fall back to the base language (i.e. fr). If
you supply an unsupported language, NotImplementedError is raised.
Therefore, if you want to call num2words with a fallback, you can do::
try:
return num2words(42, lang=mylang)
except NotImplementedError:
return num2words(42, lang='en')
Additionally, some converters and languages support other optional arguments that are needed to make the converter useful in practice.
For additional information on some localization please check the Wiki_. And feel free to propose wiki enhancement.
.. _Wiki: https://github.com/savoirfairelinux/num2words/wiki
num2words is based on an old library, pynum2word, created by Taro Ogawa
in 2003. Unfortunately, the library stopped being maintained and the author
can't be reached. There was another developer, Marius Grigaitis, who in 2011
added Lithuanian support, but didn't take over maintenance of the project.
I am thus basing myself on Marius Grigaitis' improvements and re-publishing
pynum2word as num2words.
Virgil Dupras, Savoir-faire Linux
num2words based on the old pynum2word project.FAQs
Modules to convert numbers to words. Easily extensible.
We found that num2words demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 3 open source maintainers collaborating on the project.
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