Question

我正在尝试遍历此json字符串

"layoutOptions": {
    "titleText": "Route Number",
    "authorText": "West LA Yard",
    "copyrightText": "",
    "customTextElements": [{
            "Date": "9/11/2018, 7:37:35 AM"
        }
    ],
    "scaleBarOptions": {
        "metricUnit": "esriKilometers",
        "metricLabel": "km",
        "nonMetricUnit": "esriMiles",
        "nonMetricLabel": "mi"
    },
    "legendOptions": {
        "operationalLayers": [{
                "id": "ParcelRouteEditingTest_1458"
            }, {
                "id": "ParcelRouteEditingTest_1259"
            }
        ]
    }
}

我不断遇到此错误list indices must be integers, not str

layoutOpsDict = layoutData["layoutOptions"]
dateList = [dateEle["customTextElements"]["Date"] for dateEle in layoutOpsDict]

错误：追溯（最近一次通话）：

  File "<pyshell#44>", line 1, in <module>
    dateList = [dateEle["customTextElements"]["Date"] for dateEle in layoutOpsDict]
TypeError: string indices must be integers, not str

除了继续设置更多变量以进行跟踪之外，在customTextElements中获取日期的最佳方法是什么？

Answer 1

您正在遍历每个键，而不仅仅是"customTextElements"，而且并非所有键都包含以"Date"作为键的字典列表。

由于您只想浏览映射到"customTextElements"的值，因此只能循环浏览：

dateList = [dateEle["Date"] for dateEle in layoutOpsDict["customTextElements"]]

从json字符串从customText获取日期

1 个答案: