修正数据到json格式

def test():
    file_path = r'./data/0914/position_predict_100.txt'
    save_path = r'./data/0914/position_predict_100.json'
    save_dict = {}
    with open(file_path, 'r', encoding='utf8') as fr:
        with open(save_path, 'w', encoding='utf8') as fw:
            content = fr.readlines()
            for each in content:
                each_dict = dict(eval(each.strip()))
                save_dict[each_dict["_id"]] = each_dict
            json.dump(save_dict, fw, indent=4)
            print('ok')