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Python library for managing stop words in many languages.

Project description

Build Status - develop branch Coverage of the code

Python library for managing common stop words in 39 languages.



More than a long speech here a direct introduction:

>>> from mots_vides import stop_words

>>> english_stop_words = stop_words('en')
>>> text = """
... Even though using "lorem ipsum" often arouses curiosity
... due to its resemblance to classical Latin,
... it is not intended to have meaning.
... """

>>> print(english_stop_words.rebase(text))
XXXX XXXXXX XXXXX "lorem ipsum" XXXXX arouses curiosity
XXX XX XXX resemblance XX classical Latin,
XX XX XXX intended XX XXXX meaning.

>>> print(english_stop_words.rebase(text, '').split())
['"lorem', 'ipsum"', 'arouses', 'curiosity', 'resemblance',
'classical', 'Latin,', 'intended', 'meaning.']


Mots vides also provides two objects for managing the stop words in your language.

StopWord which is a container for a collection of stop words. By default is language agnostic, but can be easily manipulated to enrich the collection:

>>> from mots_vides import StopWord

>>> french_stop_words = StopWord('french', ['le', 'la', 'les'])
>>> french_stop_words += StopWord('french', ['un', 'une', 'des'])
>>> french_stop_words += ['or', 'ni', 'car']
>>> french_stop_words += 'assez'
>>> print(sorted(french_stop_words))
['assez', 'car', 'des', 'la', 'le', 'les', 'ni', 'or', 'un', 'une']

StopWordFactory is a factory for initializing StopWord objects by language and the appropriate collection of stop words.

>>> from mots_vides import StopWordFactory

>>> factory = StopWordFactory()
>>> french_stop_words = factory.get_stop_words('french')
>>> print(len(french_stop_words))

You can also use international language code to query a collection:

>>> french_stop_words = factory.get_stop_words('fr')
>>> print(len(french_stop_words))

If the required language does not exist a StopWordError is raised, until the fail_safe parameter is set to True:

>>> klingon_stop_words = factory.get_stop_words('klingon')
StopWordError: Stop words are not available in "klingon".
>>> klingon_stop_words = factory.get_stop_words('klingon', fail_safe=True)
>>> print(len(klingon_stop_words))

Supported languages

  • Arabic
  • Armenian
  • Basque
  • Bengali
  • Bulgarian
  • Catalan
  • Chinese
  • Czech
  • Danish
  • Dutch
  • English
  • Finnish
  • French
  • Galician
  • German
  • Greek
  • Hindi
  • Hungarian
  • Indonesian
  • Irish
  • Italian
  • Japanese
  • Korean
  • Latvian
  • Lithuanian
  • Marathi
  • Norwegian
  • Persian
  • Polish
  • Portuguese
  • Romanian
  • Russian
  • Slovak
  • Spanish
  • Swedish
  • Thai
  • Turkish
  • Ukrainian
  • Urdu


Tested with Python 2.6, 2.7, 3.2, 3.3, 3.4.


Mots vides means stop words in french.

Inspired from



  • Initial release


  • Development release

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