如何通过动态组合来自多个其他json行的元素来创建新的json行。

import json

def combine_json_rows(json_rows):
    new_json_row = {}

    for row in json_rows:
        # 解析原始JSON行
        data = json.loads(row)

        # 动态组合元素
        new_json_row['key1'] = data['key1']
        new_json_row['key2'] = data['key2']
        new_json_row['combined_key'] = data['key3'] + data['key4']

    # 转换为JSON格式
    new_json = json.dumps(new_json_row, indent=4)
    return new_json

# 示例输入数据
json_rows = [
    '{"key1": "value1", "key2": "value2", "key3": "value3", "key4": "value4"}',
    '{"key1": "value5", "key2": "value6", "key3": "value7", "key4": "value8"}'
]

# 调用函数进行动态组合
result = combine_json_rows(json_rows)
print(result)