python - 最大値を持つ Python 辞書の戻り値と値の再定義

Question

import ast # needed to read text as a dictionary
#import operator # needed to find maximum value
def define_words():
    '''
    Finds the word with the most occurences
    Asks for a definition
    Replaces entry in working dictionary
    Writes to a new final dictionary

    '''
    with open('/Users/admin/Desktop/Dante Dictionary/parole_di_dante.txt','r', encoding = "utf-8") as dic:
        dante_dict = ast.literal_eval(dic.read())# reads text as a dictionary
        #key_to_find = ''
        #definition = ''

        key_to_find = max(dante_dict.items(), key=operator.itemgetter(1))[0]
        print('The word needing to be defined is ', key_to_find)

        definition = input('Definition ? : ')
        for key_to_find in dante_dict.keys():
            #if key == key_to_find:
            dante_dict[key_to_find] = definition


    with open('/Users/admin/Desktop/Dante Dictionary/parole_di_dante.txt', 'w', encoding = 'utf-8') as outfile:
        outfile.write(str(dante_dict))

    with open('/Users/admin/Desktop/Dante Dictionary/final_dante_dictionary.txt', 'w', encoding = 'utf-8') as finalfile:
        finalfile.write(str(dante_dict))

上記を使用して、次の形式で辞書から返します。

{'sicuramente,': 11, 'beatitudo,': 11, 'concetti:': 15, 'ello:': 15, 'ello;': 16, 'favella,': 33, 'fene.': 13, 'ello,': 22, 'spira,': 66,'che': 560,…}

ただし、上記の「プログラム」を実行すると、「それ」として定義する「che」という単語で言うと、返されるものは次のとおりです。

{'sicuramente,': 'that', 'beatitudo,': 'that', 'concetti:': 'that', 'ello:': 'that', 'ello;': 'that', 'favella,': 'that', 'fene.': 'that', 'ello,': 'that', 'spira,': 'that','che': 'that'…} instead of changing only the entry that I want to edit.

明らかに私は愚かなことをしています。また、句読点を削除できていないということもありません。あなたの助けに感謝します。ありがとうございました