如何在对象的多个嵌套部分中获取相同的字段

def get_field_value(obj, field_name):
    result = []
    if isinstance(obj, dict):
        for key, value in obj.items():
            if key == field_name:
                result.append(value)
            if isinstance(value, (dict, list)):
                result.extend(get_field_value(value, field_name))
    elif isinstance(obj, list):
        for item in obj:
            result.extend(get_field_value(item, field_name))
    return result

data = {
    "name": "John",
    "age": 30,
    "address": {
        "street": "123 Main St",
        "city": "New York",
        "country": "USA"
    },
    "friends": [
        {
            "name": "Alice",
            "age": 28
        },
        {
            "name": "Bob",
            "age": 32
        }
    ]
}

field_name = "name"
result = get_field_value(data, field_name)
print(result)  # 输出：['John', 'Alice', 'Bob']