python数据类型---dict字典元素的读取

最新推荐文章于 2025-06-28 03:44:34 发布

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最新推荐文章于 2025-06-28 03:44:34 发布

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分类专栏： python

本文链接：https://blog.youkuaiyun.com/qq_18543521/article/details/90485286

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本文介绍了Python中字典元素的读取方法，包括直接通过键名访问和使用get()方法。对于存在列表和字典多级嵌套的情况，可以通过逐级访问或get()函数获取最深层的键值。

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data = {
    "changeorderdetail": [
        {
            "reqtoken": "GS6083774234523458",
            "fromstation": "平凉",
            "changestatus": True,
            "traintime": "2019-06-13 13:10",
            "tostation": "平凉南",
            "ticketstatus": [
                {
                    "zwname": "硬座",
                    "price": 1,
                    "outticketdetail": "",
                    "piaotypename": "成人",
                    "status": "已出票",
                    "idtype": "1",
                    "zwcode": "1",
                    "passengersename": "苌22",
                    "ticket_no": "E8370396482020055",
                    "statusid": "6",
                    "idnumber": "410727124432",
                    "cxin": "02车厢,055号"
                }
            ]
        }
    ],
    "fromstation": "平凉",
    "Payforit": True,
    "ordernumber": "E837039648",
    "changetype": 1,
    "checi": "6074",
    "code": "100",
    "msg": "查询订单成功",
    "arrivetime": "2019-06-14 13:25",
    "tostation": "平凉南",
    "costtime": "00:15",
    "ticketstatus": [
        {
            "zwname": "硬座",
            "price": 1,
            "outticketdetail": "",
            "piaotypename": "成人",
            "status": "已在线改签",
            "idtype": "1",
            "zwcode": "1",
            "passengersename": "苌凯有",
            "ticket_no": "E8370396481020048",
            "statusid": "2",
            "idnumber": "4107271423442124432",
            "cxin": "02车厢,048号"
        }
    ],
    "transactionid": "T190516E26CAD690501C04DBA0BE080EA16DA1CC0AB",
    "orderstatusname": "出票成功",
    "orderid": "testTong51370978-f084-4411-837a-5f742926f3f8",
    "traintime": "2019-06-14 13:10",
    "success": True,
    "cashchange": []
}

print(type(data))
print(data["changeorderdetail"][0].get("ticketstatus")[0].get("ticket_no"))
print(data["changeorderdetail"][0]["ticketstatus"][0]["ticket_no"])

print(data[“changeorderdetail”][0].get(“ticketstatus”)[0].get(“ticket_no”))
print(data[“changeorderdetail”][0][“ticketstatus”][0][“ticket_no”])

这两句的结果是一样的。

总结如下：
1）要想获取字典的某个key的值，直接通过key的名称就可以，如data[“changeorderdetail”]
2）除了通过key的名称，也可以通过: 字典名称.get(“key名称”)方式获取。
3）如上代码，表示字典中存在着列表，字典等多级嵌套，这种情况下想获得最深一级的键值，同上逐级获取就可以了。