Python: How to Replace a Specific Field Value in a JSON File

import json

# 读取 json 文件
with open('data.json') as f:
    data = json.load(f)

# 更新某个字段
data['field_name'] = 'new content'

# 写回 json 文件
with open('data.json', 'w') as f:
    json.dump(data, f)