JSON - 在 python 中循环生成一个 json
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JSON - Generating a json in a loop in python
提问by Below the Radar
I have some difficulties generating a specific JSON object in python.
我在 python 中生成特定的 JSON 对象时遇到了一些困难。
I need it to be in this format:
我需要它是这种格式：
[
{"id":0 , "attributeName_1":"value" , "attributeName_2":"value" , .... },
{"id":1 , "attributeName_2":"value" , "attributeName_3":"value" , .... },
.
.
.
]
In python, im getting the ids, attributeNames and values from 2 objects. Im trying to generate the json like this:
在 python 中，我从 2 个对象中获取 id、attributeName 和值。我试图生成这样的json：
data=[]
for feature in features_selected:
data.append({"id":feature.pk})
for attribute in attributes_selected:
if attribute.feature == feature:
data.append({attribute.attribute.name : attribute.value})
jsonData=json.dumps(data)
but I got this result which is not exactly what I need:
但我得到的结果并不完全是我需要的：
[
{"id":0} , {"attributeName_1":"value"} , {"attributeName_2":"value"} ,
{"id":1} , {"attributeName_2":"value"} , {"attributeName_3":"value"} , .... },
.
.
.
]
采纳答案by alecxe
The problem is that you are appending to datamultiple times in the loop: first {"id":feature.pk}, then {attribute.attribute.name : attribute.value}in the inner loop.
问题是您data在循环中多次追加： first {"id":feature.pk}，然后{attribute.attribute.name : attribute.value}在内部循环中。
Instead, you need to define a dictionary inside the loop, fill it with iditem and attributes and only then append:
相反，您需要在循环内定义一个字典，用id项目和属性填充它，然后才附加：
data=[]
for feature in features_selected:
item = {"id": feature.pk}
for attribute in attributes_selected:
if attribute.feature == feature:
item[attribute.attribute.name] = attribute.value
data.append(item)
jsonData=json.dumps(data)
