如何解決TypeError：列表索引必須是整數或切片，而不是python中的str

Question

情況

我試圖訪問 json 字符串中的值但收到錯誤：

類型錯誤：列表索引必須是整數或切片，而不是 str

JSON

        j={
        "type": "FeatureCollection",
        "features": [
            {
                "type": "Feature",
                "geometry": {
                    "type": "Point",
                    "coordinates": [
                        2.44775,
                        48.925778
                    ]
                },
                "properties": {
                    "country_code": "fr",
                    "housenumber": "15",
                    "street": "Rue Leon Bernard",
                    "distance": 16.948223707815888,
                    "country": "France",
                    "county": "Seine-Saint-Denis",
                    "datasource": {
                        "sourcename": "openaddresses",
                        "attribution": "© OpenAddresses contributors",
                        "license": "BSD-3-Clause License"
                    },
                    "postcode": "93700",
                    "state": "Ile-of-France",
                    "district": "Drancy",
                    "city": "Drancy",
                    "lon": 2.44775,
                    "lat": 48.925778,
                    "result_type": "building",
                    "formatted": "15 Rue Leon Bernard, 93700 Drancy, France",
                    "address_line1": "15 Rue Leon Bernard",
                    "address_line2": "93700 Drancy, France",
                }
            }
        ]
    }

目標

我需要獲取country_code 和country 的值我已經嘗試過

j['features']['properties'][0]` 

問題：

如何在python中獲取這兩個字段的值？

Answer 1

在您提供的 json 中，'features' 值是一個列表，因此您需要相應地對其進行索引。

j['features'][0]['properties']

從這里您應該能夠簡單地繼續訪問“屬性”的所有值