从文件列表中读取特定的json key并将其另存为新文件

import json
import os

def read_json_key_from_files(file_list, key):
    for file_path in file_list:
        with open(file_path, 'r') as file:
            try:
                json_data = json.load(file)
                if key in json_data:
                    new_json = {key: json_data[key]}
                    new_file_path = f"new_{key}_{os.path.basename(file_path)}"
                    with open(new_file_path, 'w') as new_file:
                        json.dump(new_json, new_file)
                        print(f"Successfully saved {key} from {file_path} to {new_file_path}")
                else:
                    print(f"{key} not found in {file_path}")
            except json.JSONDecodeError:
                print(f"Error decoding JSON in {file_path}")

# 示例用法
file_list = ['file1.json', 'file2.json', 'file3.json']
key = 'example_key'
read_json_key_from_files(file_list, key)