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<p>我想创建一个使用Python的Alexa技能来使用传感器上传到Thingspeak的数据。在我只使用一个特定值的情况下是非常容易的,Thingspeak的响应只是值。当我想使用几个值来总结大气压力来确定趋势时,响应是一个json对象,如下所示:</p>
<pre><code>{"channel":{"id":293367,"name":"Weather Station","description":"My first attempt to build a weather station based on an ESP8266 and some common sensors.","latitude":"51.473509","longitude":"7.355569","field1":"humidity","field2":"pressure","field3":"lux","field4":"rssi","field5":"temp","field6":"uv","field7":"voltage","field8":"radiation","created_at":"2017-06-25T07:35:37Z","updated_at":"2018-08-04T12:11:22Z","elevation":"121","last_entry_id":1812},"feeds":
[{"created_at":"2018-10-21T18:11:45Z","entry_id":1713,"field2":"1025.62"},
{"created_at":"2018-10-21T18:12:05Z","entry_id":1714,"field2":"1025.58"},
{"created_at":"2018-10-21T18:12:25Z","entry_id":1715,"field2":"1025.56"},
{"created_at":"2018-10-21T18:12:45Z","entry_id":1716,"field2":"1025.65"},
{"created_at":"2018-10-21T18:13:05Z","entry_id":1717,"field2":"1025.58"},
{"created_at":"2018-10-21T18:13:25Z","entry_id":1718,"field2":"1025.63"}]
</code></pre>
<p>我现在从</p>
^{pr2}$
<p>json对象有点递归,它是一个列表,其中包含一个以数组为值的元素。
现在我不太确定如何迭代数组中键“field2”的值。我对Python和json非常陌生。也许谁能帮我?在</p>
<p>提前谢谢!在</p>