我喜歡提取特定的密鑰并將它們存儲在列表中。到目前為止，我能夠從 MariaDB 讀取并將行存儲為字典（我更喜歡將輸出設(shè)置為 JSON）：import pymysqlimport simplejson as jsonimport collectionsimport credentials_globalconn = pymysql.connect(    host=credentials_global.mariadb_dev_ip_address,    user=credentials_global.mariadb_dev_username,    password=credentials_global.mariadb_dev_password,    port=credentials_global.mariadb_dev_port,    database=credentials_global.mariadb_dev_db_ticketing,)cursor = conn.cursor()cursor.execute("select a, b, c, d, e, f from master.orders where c = 215")rows = cursor.fetchall()objects_list = []for row in rows:    d = collections.OrderedDict()    d["a"] = row[0]    d["b"] = row[1]    d["c"] = row[2]    d["d"] = row[3]    d["e"] = row[4]    d["f"] = row[5]    objects_list.append(d)j = json.dumps(objects_list)print(j)這將生成輸出：[    {        "a": 4153,        "b": "NO_EFFECT",        "c": "none",        "d": "Medium",        "e": 1,        "f": "No Remarks",    },    {        "a": 4154,        "b": "SIGNIFICANT",        "c": "none",        "d": "Low",        "e": 1,        "f": "Test Message",    },]我喜歡提取 的所有出現(xiàn)。我試過：ffor key, value in d.items():    print(value)此輸出：4153NO_EFFECTnoneMedium1No Remarks4154SIGNIFICANTnoneLow1Test Message我更喜歡的是只提取，以便輸出是這樣的（我假設(shè)序列是維護(hù)的）。有人可以幫助我如何實(shí)現(xiàn)或在哪里尋找嗎？f[No Remarks, Test Message]