消除json/字典中的所有空结构

import json

def remove_empty(json_obj):
    if isinstance(json_obj, dict):
        # 遍历字典的键值对
        for key, value in list(json_obj.items()):
            if value is None or value == "":
                # 删除空值的键值对
                del json_obj[key]
            elif isinstance(value, (dict, list)):
                # 递归处理嵌套的字典或列表
                remove_empty(value)
    elif isinstance(json_obj, list):
        # 遍历列表的元素
        for item in json_obj:
            if isinstance(item, (dict, list)):
                # 递归处理嵌套的字典或列表
                remove_empty(item)

# 示例JSON对象
json_data = {
    "name": "John",
    "age": 30,
    "address": {
        "street": "",
        "city": "New York",
        "country": None
    },
    "hobbies": ["reading", "", "swimming"],
    "friends": [
        {"name": "Alice", "age": 25},
        {"name": "", "age": 35},
        {"name": "Bob", "age": None}
    ]
}

# 删除空结构
remove_empty(json_data)

# 打印结果
print(json.dumps(json_data, indent=4))

{
    "name": "John",
    "age": 30,
    "address": {
        "city": "New York"
    },
    "hobbies": ["reading", "swimming"],
    "friends": [
        {"name": "Alice", "age": 25}
    ]
}