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言語処理100本ノック(2020): 32

Posted at
"""
32. 動詞の原形
動詞の原形をすべて抽出せよ

[[{'surface': '', 'base': '*', 'pos': 'BOS/EOS', 'pos1': '*'},
  {'surface': '', 'base': '', 'pos': '名詞', 'pos1': ''},
  {'surface': '', 'base': '*', 'pos': 'BOS/EOS', 'pos1': '*'}],
 [{'surface': '', 'base': '*', 'pos': 'BOS/EOS', 'pos1': '*'},
  {'surface': '吾輩', 'base': '吾輩', 'pos': '名詞', 'pos1': '代名詞'},
  {'surface': '', 'base': '', 'pos': '助詞', 'pos1': '係助詞'},
  {'surface': '', 'base': '', 'pos': '名詞', 'pos1': '一般'},
  {'surface': '', 'base': '', 'pos': '助動詞', 'pos1': '*'},
  {'surface': 'ある', 'base': 'ある', 'pos': '助動詞', 'pos1': '*'},
  {'surface': '', 'base': '', 'pos': '記号', 'pos1': '句点'},
  {'surface': '', 'base': '*', 'pos': 'BOS/EOS', 'pos1': '*'}],
"""

import itertools
from typing import List

import utils


def get_verb(sentence: List[dict]) -> List[str, str]:
    result = []
    for word in sentence:
        if word["pos"] == "動詞":
            result.append(word["base"])
    return result


data = utils.read_json("30_neko_mecab.json")
verbs = [get_verb(sentence) for sentence in data if get_verb(sentence)]
# [['生れる', 'つく'], ['する', '泣く', 'する', 'いる'], ['始める', '見る'], ['聞く'], ['捕える', '煮る', '食う']]

flat = list(itertools.chain(*verbs))
# ['生れる', 'つく', 'する', '泣く', 'する']

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