socrata - 选择一列时，如何获取列表而不是字典列表？

Question

我的查询是https://data.seattle.gov/resource/y2d4-ftqb.json?$group=categories&$select=categories&$where=categories%20IS%20NOT%20NULL

输出是

[{"categories":"Training|Use of Force"}
,{"categories":"Narcotics"}
,{"categories":"Traffic|Assist"}
,{"categories":"Burglary"}
,{"categories":"Crisis"} ...

我如何获得输出：

["Training|Use of Force", "Narcotics", "Traffic|Assist", "Burglary", "Crisis",...]

?

Answer 1

您可以请求端点，而不是请求json端点（这会导致您返回一组对象）csv：

https://data.seattle.gov/resource/y2d4-ftqb.csv?$group=categories&$select=categories&$where=categories%20IS%20NOT%20NULL

这将返回单个标题行 ( "categories")，然后将每个非空类别作为常规字符串在其自己的行上返回：

"categories"
"Training|Use of Force"
"Narcotics"
"Traffic|Assist"
"Burglary"
"Crisis"
...