从嵌套的JSON值创建字典键和值对

import json

def create_dict_from_json(json_str):
    # 解析JSON字符串
    json_obj = json.loads(json_str)
    
    # 创建空字典
    result_dict = {}
    
    # 递归函数，用于遍历JSON对象并创建字典键和值对
    def traverse_json(obj, parent_key=''):
        if isinstance(obj, dict):
            for key, value in obj.items():
                new_key = key if parent_key == '' else parent_key + '_' + key
                traverse_json(value, new_key)
        elif isinstance(obj, list):
            for index, item in enumerate(obj):
                new_key = parent_key + '_' + str(index)
                traverse_json(item, new_key)
        else:
            result_dict[parent_key] = obj
    
    # 调用递归函数
    traverse_json(json_obj)
    
    return result_dict

# 示例JSON字符串
json_string = '''
{
    "name": "John",
    "age": 30,
    "address": {
        "street": "123 Main St",
        "city": "New York",
        "state": "NY"
    },
    "phones": [
        {
            "type": "home",
            "number": "555-1234"
        },
        {
            "type": "work",
            "number": "555-5678"
        }
    ]
}
'''

# 创建字典键和值对
result = create_dict_from_json(json_string)

# 打印结果
for key, value in result.items():
    print(key + ':', value)

name: John
age: 30
address_street: 123 Main St
address_city: New York
address_state: NY
phones_0_type: home
phones_0_number: 555-1234
phones_1_type: work
phones_1_number: 555-5678