使用python遍歷嵌套列表以獲取特定值

Question

我有一個json文件，我試圖從多個“區域”中僅提取“代碼”

我可以單獨提取代碼，但是我覺得應該有一個for循環，我可以編寫它以自動遍歷每個“區域”，因為我不會總是只有3個區域。

我已經嘗試了以下嵌套循環的多種變體，但我無法對其進行迭代

for areas in data:
   for area in areas:
      print(area['code']

當前的python代碼：

import json

with open('areas.json') as f:
    data = json.load(f)


    print(data['areas'][0]['area']['code'])
    print(data['areas'][1]['area']['code'])
    print(data['areas'][2]['area']['code'])

JSON文件：

"areas": [
      {
         "slotId": "slot1",
         "area": {
            "id": "southern",
            "code": "southern",
            "label": "southern area",
            "featureToggles": [],
            "featureChoices": []
         },
         "editable": true,
         "areaCategoryId": null
      },
      {
         "slotId": "slot2",
         "area": {
            "id": "easter",
            "code": "eastern",
            "label": "eastern area",
            "featureToggles": [],
            "featureChoices": []
         },
         "editable": true,
         "areaCategoryId": null
      },
      {
         "slotId": "slot3",
         "area": {
            "id": "western",
            "code": "western",
            "label": "western area",
            "featureToggles": [],
            "featureChoices": []
         },
         "editable": true,
         "areaCategoryId": null
      }

預期結果是每個區域都會打印出“代碼”。 它正確地做到了。 但是，我想遍歷整個過程而不必每次都添加新行，因為那簡直是荒謬而又乏味的。

Answer 1

訪問作為列表的data['areas'] ，然后對其進行迭代以獲取各個area對象

with open('areas.json') as f:
    data = json.load(f)

    for area in data['areas']:
        print(area['area']['code'])