如何找到并替换JSON文件中出现的所有单词，并使用python保存生成的JSON？

import json

with open('input.json', 'r') as file:
    data = json.load(file)

def replace_words(obj, target_word, replacement):
    if isinstance(obj, dict):
        for key, value in obj.items():
            if isinstance(value, (dict, list)):
                replace_words(value, target_word, replacement)
            elif isinstance(value, str):
                obj[key] = value.replace(target_word, replacement)
    elif isinstance(obj, list):
        for i in range(len(obj)):
            if isinstance(obj[i], (dict, list)):
                replace_words(obj[i], target_word, replacement)
            elif isinstance(obj[i], str):
                obj[i] = obj[i].replace(target_word, replacement)

with open('output.json', 'w') as file:
    json.dump(data, file)

import json

def replace_words(obj, target_word, replacement):
    if isinstance(obj, dict):
        for key, value in obj.items():
            if isinstance(value, (dict, list)):
                replace_words(value, target_word, replacement)
            elif isinstance(value, str):
                obj[key] = value.replace(target_word, replacement)
    elif isinstance(obj, list):
        for i in range(len(obj)):
            if isinstance(obj[i], (dict, list)):
                replace_words(obj[i], target_word, replacement)
            elif isinstance(obj[i], str):
                obj[i] = obj[i].replace(target_word, replacement)

# 读取JSON文件
with open('input.json', 'r') as file:
    data = json.load(file)

# 替换单词
replace_words(data, 'old_word', 'new_word')

# 转换为JSON并保存
with open('output.json', 'w') as file:
    json.dump(data, file)