如何修复:删除JSON文件中的重复项并写入新文件

import json

def remove_duplicates(json_file, unique_property, output_file):
    # 读取JSON文件
    with open(json_file, 'r') as file:
        json_data = json.load(file)

    # 去除重复项
    seen_values = set()
    unique_json_data = []
    for item in json_data:
        if item[unique_property] not in seen_values:
            seen_values.add(item[unique_property])
            unique_json_data.append(item)

    # 创建新的JSON对象
    new_json_data = unique_json_data

    # 写入新文件
    with open(output_file, 'w') as file:
        json.dump(new_json_data, file)

# 示例用法
remove_duplicates('data.json', 'id', 'new_data.json')