{"library":"natto-py","title":"natto-py (MeCab binding)","description":"natto-py is a Python package that provides a Foreign Function Interface (FFI) binding to MeCab, the part-of-speech and morphological analyzer for the Japanese language. It allows Python applications to leverage MeCab's capabilities without requiring SWIG or a C compiler for installation. The current version is 1.0.1, and the library is actively maintained with an irregular release cadence.","language":"python","status":"active","last_verified":"Fri May 15","install":{"commands":["pip install natto-py"],"cli":null},"imports":["from natto import MeCab","from natto.mecab import MeCabNode"],"auth":{"required":false,"env_vars":[]},"quickstart":{"code":"import os\nfrom natto import MeCab\n\n# Optional: Set MeCab path and charset if auto-detection fails\n# os.environ['MECAB_PATH'] = os.environ.get('MECAB_PATH', '/usr/local/lib/libmecab.so')\n# os.environ['MECAB_CHARSET'] = os.environ.get('MECAB_CHARSET', 'utf8')\n\n# Instantiate MeCab with recommended options for detailed parsing\n# -F: node-format for features, -U: unk-format for unknown words\nwith MeCab(r'-F%m,%f[0],%f[1],%f[2],%f[3],%f[4],%f[5],%f[6],%f[7],%f[8]\\n -U?,?,?,?,?,?,?,?,?,?\\n') as nm:\n    text = 'これは日本語のテキストです。'\n    print(f\"Parsed text (string output):\\n{nm.parse(text)}\\n\")\n\n    print(\"Parsed text (node output with features):\")\n    for n in nm.parse(text, as_nodes=True):\n        if not n.is_eos(): # Ignore end-of-sentence nodes\n            print(f'Surface: {n.surface}, Feature: {n.feature}, Cost: {n.cost}')","lang":"python","description":"This quickstart demonstrates how to initialize `natto-py` with MeCab and perform both string-based and node-based parsing. The `with` statement is used for proper resource management, and MeCab options are set to obtain detailed morphological features for each node.","tag":null,"tag_description":null,"last_tested":null,"results":[]},"compatibility":{"tag":null,"tag_description":null,"last_tested":"2026-05-15","installed_version":"1.0.1","pypi_latest":"1.0.1","is_stale":false,"summary":{"python_range":"3.10–3.9","success_rate":100,"avg_install_s":2.8,"avg_import_s":0.04,"wheel_type":"sdist"},"results":[{"runtime":"python:3.10-alpine","python_version":"3.10","os_libc":"alpine (musl)","variant":"natto-py","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.03,"mem_mb":1.8,"disk_size":"20.9M"},{"runtime":"python:3.10-slim","python_version":"3.10","os_libc":"slim (glibc)","variant":"natto-py","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":2.5,"import_time_s":0.02,"mem_mb":1.8,"disk_size":"21M"},{"runtime":"python:3.11-alpine","python_version":"3.11","os_libc":"alpine (musl)","variant":"natto-py","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.06,"mem_mb":2.2,"disk_size":"23.6M"},{"runtime":"python:3.11-slim","python_version":"3.11","os_libc":"slim (glibc)","variant":"natto-py","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":2.4,"import_time_s":0.05,"mem_mb":2.2,"disk_size":"24M"},{"runtime":"python:3.12-alpine","python_version":"3.12","os_libc":"alpine (musl)","variant":"natto-py","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.05,"mem_mb":2.1,"disk_size":"13.5M"},{"runtime":"python:3.12-slim","python_version":"3.12","os_libc":"slim (glibc)","variant":"natto-py","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":3.3,"import_time_s":0.05,"mem_mb":2.1,"disk_size":"14M"},{"runtime":"python:3.13-alpine","python_version":"3.13","os_libc":"alpine (musl)","variant":"natto-py","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.05,"mem_mb":2.2,"disk_size":"13.3M"},{"runtime":"python:3.13-slim","python_version":"3.13","os_libc":"slim (glibc)","variant":"natto-py","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":3,"import_time_s":0.05,"mem_mb":2,"disk_size":"14M"},{"runtime":"python:3.9-alpine","python_version":"3.9","os_libc":"alpine (musl)","variant":"natto-py","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.03,"mem_mb":1.7,"disk_size":"21.2M"},{"runtime":"python:3.9-slim","python_version":"3.9","os_libc":"slim (glibc)","variant":"natto-py","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":2.8,"import_time_s":0.03,"mem_mb":1.7,"disk_size":"22M"}]}}