python - 获取JSON数据的特定值

Question

我使用以下代码从 RESTCONF HTTPS 请求获取 JSON 数据。

https_request = 'https://' + host + '/restconf/data/' + operation
headers = {'Content-type': 'application/yang-data+json', 'Accept': 'application/yang-data+json'}
r = requests.get(https_request, auth=(user, password), headers=headers, verify=False)
print r.json()

我得到的数据是:

{
    "Cisco-IOS-XE-native:Tunnel": {
        "name": 0,
        "bandwidth": {
            "kilobits": 256
        },
        "ip": {
            "address": {
                "primary": {
                    "address": "10.10.1.1",
                    "mask": "255.255.255.252"
                }
            }
        },
        "load-interval": 30,
        "Cisco-IOS-XE-tunnel:tunnel": {
            "source": "GigabitEthernet1",
            "destination": {
                "ipaddress-or-host": "10.2.1.3"
            }
        }
    }
}

基本上，我希望我的函数返回字段的“bandwidth”值，即256。我尝试了以下方法，但没有成功。

capacity = r.json()['Cisco-IOS-XE-native:Tunnel']['bandwidth']

Answer 1

试试这个:

j={
    "Cisco-IOS-XE-native:Tunnel": {
        "name": 0,
        "bandwidth": {
            "kilobits": 256
        },
        "ip": {
            "address": {
                "primary": {
                    "address": "10.10.1.1",
                    "mask": "255.255.255.252"
                }
            }
        },
        "load-interval": 30,
        "Cisco-IOS-XE-tunnel:tunnel": {
            "source": "GigabitEthernet1",
            "destination": {
                "ipaddress-or-host": "10.2.1.3"
            }
        }
    }
}
print(j['Cisco-IOS-XE-native:Tunnel']['bandwidth'])

这将返回:

{'kilobits': 256}

对于 256:

print(j['Cisco-IOS-XE-native:Tunnel']['bandwidth']['kilobits'])