如何在python列表中創建和比較JSON值

Question

嘗試構建和比較從JSON REST API提取的項目列表，似乎有一種更簡單的方法可以將整個json響應轉換為

我有一個來自REST API的JSON數據，我想從中提取並比較數據對。 該代碼顯示了從響應中提取的兩個值，但是我想重復執行此操作，並且僅顯示尚未返回的值。

>>> response = requests.get('http://192.168.2.3:8081/api/session/wifi', auth=('user', 'pass'))
>>> json_response = response.json()
>>> #parse the json and get list of mac and channels
... for each in json_response['aps']:
...     channel = each['channel']
...     mac = each['mac']
...     print channel, mac
...
11 74:83:c2:1a:d2:74
11 18:e8:29:bb:16:39
11 f0:f2:49:0b:9b:e8
6 c0:7c:d1:b8:14:28
6 84:34:97:b4:0f:a1
11 76:83:c2:1a:d2:74
11 f0:f2:49:e2:2c:e8
1 1a:e8:29:9d:1e:63
11 1a:e8:29:9b:16:39
11 1a:e8:29:9d:1f:16
11 18:e8:29:9d:1f:16
1 18:e8:29:9d:1e:63

我希望有一種使用JSON請求對象的簡便方法。

這是源JSON：

{
    "aps": [{
            "received": 0,
            "handshake": false,
            "clients": [],
            "vendor": "Ubiquiti Networks Inc.",
            "encryption": "WPA2",
            "hostname": "CoreWireless",
            "authentication": "PSK",
            "wps": {},
            "sent": 1875183,
            "alias": "",
            "mac": "18:e8:29:9d:1e:63",
            "meta": {
                "values": {}
            },
            "frequency": 2412,
            "ipv4": "0.0.0.0",
            "ipv6": "",
            "rssi": -63,
            "first_seen": "2019-09-18T09:56:09.938447-06:00",
            "cipher": "TKIP",
            "channel": 1,
            "last_seen": "2019-09-18T12:45:50.489350663-06:00"
        }, {
            "received": 0,
            "handshake": false,
            "clients": [],
            "vendor": "",
            "encryption": "WPA2",
            "hostname": "<hidden>",
            "authentication": "PSK",
            "wps": {},
            "sent": 0,
            "alias": "",
            "mac": "1a:e8:29:9b:16:39",
            "meta": {
                "values": {}
            },
            "frequency": 2462,
            "ipv4": "0.0.0.0",
            "ipv6": "",
            "rssi": -73,
            "first_seen": "2019-09-18T09:56:12.473447-06:00",
            "cipher": "CCMP",
            "channel": 11,
            "last_seen": "2019-09-18T12:45:49.718002705-06:00"
        }
    ]
}

Answer 1

您是否可以實現如下所示的緩存？

cache = set()
for each in json_response['aps']:
    channel = each['channel']
    mac = each['mac']
    if (channel, mac) not in cache:
        print channel, mac
        cache.add((channel, mac))

Answer 2

您可以使用set來存儲唯一元素，並在一個襯紙下面使用它來打印非重復頻道，mac對：

print ({(each['channel'], each['mac']) for each in json_response['aps']})