rhoknp

1.8.0 verified Fri May 01 auth: no python

Yet another Python binding for Juman++/KNP/KWJA. Current version: 1.8.0. Provides a modern Python interface for Japanese morphological analysis (Juman++), dependency/case structure analysis (KNP), and anaphora resolution (KWJA). Follows semantic versioning with frequent patch releases.

pip install rhoknp

Common errors

error ModuleNotFoundError: No module named 'rhoknp.juman' ↓

cause Importing from deprecated submodule path used in versions <1.0.0.

fix

Change import to 'from rhoknp import Jumanpp'.

error JumanppNotFoundError: Juman++ command not found ↓

cause The jumanpp executable is not installed or not on PATH.

fix

Install Juman++ (e.g., 'apt install jumanpp' on Ubuntu or download from https://github.com/ku-nlp/jumanpp).

Warnings

breaking In v1.0.0, the import path changed from 'rhoknp.juman.jumanpp' to 'rhoknp'. Old syntax no longer works. ↓

fix Use 'from rhoknp import Jumanpp' instead of 'from rhoknp.juman.jumanpp import Jumanpp'.

deprecated The 'analyze_sentence' method is deprecated in v1.5.0. Use 'analyze' instead. ↓

fix Replace jumanpp.analyze_sentence(text) with jumanpp.analyze(text).

gotcha The Jumanpp/Knp/Kwja objects require the underlying executables (jumanpp, knp, kwja) to be installed on the system PATH. pip install rhoknp does not install them. ↓

fix Install the required binaries separately (e.g., via apt, Homebrew, or source).

Imports

Jumanpp
```
from rhoknp import Jumanpp
```
Knp
```
from rhoknp import Knp
```
Kwja
```
from rhoknp import Kwja
```
Document
```
from rhoknp import Document
```

Quickstart

Basic morphological analysis with Juman++.

from rhoknp import Jumanpp
jumanpp = Jumanpp()
result = jumanpp.analyze("太郎は本を読んだ。")
for morpheme in result.morphemes:
    print(morpheme.surf, morpheme.reading)