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Very compact Japanese tokenizer

Project description

“TinySegmenter in Python” is a Python port by Masato Hagiwara of TinySegmenter, which is an extremely compact Japanese tokenizer originally written in JavaScript by Mr. Taku Kudo.

The library has been finally packaged by Jehan. It resulted into this fork because Masako Hagiwara did not answer emails, and packaging patches could therefore not be committed upstream. But this is a friendly fork, and Masako Hagiwara is welcome to take back maintainance over his project. For the time being, I (Jehan) took up the maintenance, so please refer to this new website as being official, and direct any new patch there. I will follow up on patchs and bug reports, but probably won’t maintain an active development. Anyone wishing to improve the library is welcome to participate and will be gladly given committer rights.

It works on Python 2.6 or above (works on Python 3 too).


See all authors and contributors in AUTHORS file.

Download and Installation

This library can be installed the common ways: with a, as a pip package… See the INSTALL file in the package for more details.

If you simply want to download the source package, refer to the pypi repository:

Development version can be downloaded anonymously at the Git repository:

$ git clone git://

or browsed online at:


Example code for direct usage:

> import tinysegmenter
> segmenter = tinysegmenter.TinySegmenter()
> print(' | '.join(segmenter.tokenize(u"私の名前は中野です")))
私 | の | 名前 | は | 中野 | です

TinySegmenter‘s interface is compatible with NLTK’s TokenizerI class, although the distribution does not directly depend on NLTK. Here is one way to use it as a tokenizer in NLTK (order of the multiple base classes matters):

import nltk.tokenize.api

class myTinySegmenter(tinysegmenter.TinySegmenter, nltk.tokenize.api.TokenizerI):
segmenter = myTinySegmenter()
# This segmenter can be used any place which expects a NLTK's TokenizerI subclass.

For more about NLTK (Natural Language Toolkit module), see:

Contact, Bugs and Contributing

All bug, patch, question, etc. can be sent to tinysegmenter at zemarmot dot net.


This package is distributed under a New BSD License (see COPYING file).

Project details

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tinysegmenter-0.4.tar.gz (16.9 kB view hashes)

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