mkdir py-sudachi
cd py-sudachi
python3 -m venv venv                                                                    
source venv/bin/activate
pip install --upgrade pip
touch main.py

pip install sudachipy                                                                   
pip install sudachidict_small

from sudachipy import tokenizer
from sudachipy import dictionary
import json

# Convert the config dictionary to a JSON string
config_json = json.dumps({
  "user": ["./user_dict.dic"]
})

# Pass the JSON string to the Dictionary constructor
tokenizer_obj = dictionary.Dictionary(dict='small', config=config_json).create()

# use longest match
mode = tokenizer.Tokenizer.SplitMode.A

def extract_noun(sentence:str):
    # trim
    sentence = sentence.strip()

    # tokenized list
    words = tokenizer_obj.tokenize(sentence, mode)

    list = []
    for word in words:
      # append if word is noun
      if word.part_of_speech()[0] == '名詞':
        list.append(word.dictionary_form())
    return list

sentence = """
これはテストです
"""
result = extract_noun(sentence)
print(result)

アカネ,5146,5146,8000,アカネ,名詞,固有名詞,人名,名,*,*,アカネ,アカネ,*,*,*,*,*
レイ,5146,5146,8000,レイ,名詞,固有名詞,人名,名,*,*,レイ,レイ,*,*,*,*,*

sudachipy ubuild -o user_dict.dic -s ./venv/lib/python3.10/site-packages/sudachidict_small/resources/system.dic ./akane_and_rei.csv

import csv

def create_user_dict_csv(words, filename):
    with open(filename, "w", encoding="utf-8", newline="") as file:
        writer = csv.writer(file)
        for word in words:
            row = [
                word, 5146, 5146, 8000, word,
                "名詞", "固有名詞", "*", "*", "*", "*", word, word,
                "*", "*", "*", "*", "*"
            ]
            writer.writerow(row)

import subprocess

def run_sudachipy_ubuild(userDictFileName, csvFileName):
    cmd = [
        'sudachipy', 'ubuild',
        '-o', userDictFileName,
        '-s', './venv/lib/python3.10/site-packages/sudachidict_small/resources/system.dic',
        csvFileName
    ]
    result = subprocess.run(cmd, capture_output=True, text=True)

    if result.returncode == 0:
        print('Success:', result.stdout)
    else:
        print('Error:', result.stderr)