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CFFI bindings around Google Chromium's embedded compact language detection library (CLD2)




CLD2-CFFI - Python (CFFI) Bindings for Compact Language Detector 2

`CFFI <>`_ bindings for CLD2


|pypi| |build| |win-build| |coverage| |lint|


This package contains the CLD (Compact Language Detection) library as
maintained by Dick Sites ( The first
fork was done at revision r161. It also contains python bindings that
were originally created by `Mike
McCandless <>`_.
The bindings have gone through several hands, with the latest changes being made
to rework the bindings for `CFFI <>`_.

These bindings are identical in API to the original cld2 bindings, and as a
result can be used as a drop in replacement.

The LICENSE_ is the same as Chromium's LICENSE and is included in the
LICENSE_ file for reference.


Should be as simple as

.. code-block:: bash

   $ pip install cld2-cffi

Development Version

The **latest development version** can be installed directly from GitHub:

.. code-block:: bash

    $ pip install --upgrade 'git+'


.. code-block:: python

    import cld2

    isReliable, textBytesFound, details = cld2.detect("This is my sample text")
    print('  reliable: %s' % (isReliable != 0))
    print('  textBytes: %s' % textBytesFound)
    print('  details: %s' % str(details))

    # The output looks like so:
    #  reliable: True
    #  textBytes: 24
    #  details: (('ENGLISH', 'en', 95, 1736.0), ('Unknown', 'un', 0, 0.0), ('Unknown', 'un', 0, 0.0))


First, you must get your content (plain text or HTML) encoded into UTF8
bytes. Then, detect like this:

.. code-block:: python

    isReliable, textBytesFound, details = cld2.detect(bytes)

    is True if the top language is much better than 2nd best language.

    tells you how many actual bytes CLD analyzed (after removing HTML tags,
    collapsing areas of too-many-spaces, etc.).  

    has an entry per top 3 languages that matched, that includes the percent
    confidence of the match as well as a separate normalized score.

The module exports these global constants:

    list of the encoding names CLD recognizes (if you provide hintEncoding, it
    must be one of these names).

    list of languages and their codes (if you provide hintLanguageCode, it must
    be one of the codes from these codes).

    list of external languages and their codes. Note that external languages
    cannot be hinted, but may be matched if you pass
    ``includeExtendedLanguages=True`` (the default).

    list of all detectable languages, as best I can determine (this was reverse
    engineered from a unit test, ie it contains a language X if that language
    was tested and passes for at least one example text).


Please see `AUTHORS <>`_.

Reporting bugs
Please see `BUG_REPORTS <>`_.


Please see `CONTRIBUTING <>`_.


Please see LICENSE_.


.. |pypi| image::
    :alt: Latest version released on PyPi

.. |build| image::
    :alt: Build status 

.. |win-build| image::
    :alt: Windows Build Status::

.. |coverage| image::
    :alt: Coverage

.. |lint| image::
   :alt: Code Health



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Socket installs a GitHub app to automatically flag issues on every pull request and report the health of your dependencies. Find out what is inside your node modules and prevent malicious activity before you update the dependencies.


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