Question

我在csv中以

的形式获得数据

"category1", 2010, "deatil1"
"category1", 2010, "deatil2"
"category1", 2011, "deatil3"
"category2", 2011, "deatil4"

我需要以

的形式将其映射到json

 {
        "name": "Data",
        "children": [{
            "name": "category1",
            "children": [{
                "name": "2010",
                "children": [
                    {"name": "deatil1"}, 
                    {"name": "detail2"}
                 ],
                "name": "2011",
                "children": [
                    {"name": "detail3"}
                ]
            }, {
            }]
        }, 
            {
            "name": "category2",
            "children": [{
                    "name": "2011",
                    "children": [{
                        "name": "detail4"
                    }]
                }
            ]
        }
    ]
    }

基本上我需要收集每个唯一类别和年份对的所有细节并列出

我试图使用嵌套的dict结构，但输出不正确。

我创建了一个自定义dict类来处理字典嵌套的嵌套。以下代码收集正确结构中的数据，但我不确定如何以正确的格式继续输出它。任何帮助将不胜感激。

class Vividict(dict):

    def __missing__(self, key):
        value = self[key] = type(self)()
        return value

dict = Vividict()

for row in ws.iter_rows(row_offset=1):
    sector = row[0].value
    year =  row[2].value
    detail = row[1].value
    dict[sector][year][detail]

print json.dumps(dict).encode('utf8')

Answer 1

从dict结构开始，这是建立新数据结构的问题。我在这里使用的主要是列表推导，其中创建了import json rows = [ ("category1", 2010, "deatil1"), ("category1", 2010, "deatil2"), ("category1", 2011, "deatil3"), ("category2", 2011, "deatil4")] class Vividict(dict): def __missing__(self, key): value = self[key] = type(self)() return value dict = Vividict() for row in rows: sector = row[0] year = row[1] detail = row[2] dict[sector][year][detail] # This is the new data structure, derived from the existing 'dict' d = {'name': 'Data', 'children': [ {'name': k1, # sector 'children': [ {'name': k2, # year 'children': [ { 'name': k3 # deatil } for k3 in v2.keys()] } for k2, v2 in v1.iteritems()] } for k1, v1 in dict.iteritems()] } print json.dumps(d).encode('utf8')：

<h1>

在此处查看此行动：https://eval.in/662805

将csv文件映射到嵌套的json

1 个答案: