如何在不加载整个json文件的情况下提取键值？

import json

def extract_key_value(json_file, target_key):
    with open(json_file, 'r') as f:
        for line in f:
            data = json.loads(line)
            if target_key in data:
                value = data[target_key]
                print(f"Key: {target_key}, Value: {value}")
                break

# 示例用法
json_file = 'data.json'  # JSON文件路径
target_key = 'name'  # 目标键名
extract_key_value(json_file, target_key)