Python如何在嵌套列表中插入对象

How do I insert an object in nested lists. I get json response that doesn't return a a certain object for certain a condition

如何在嵌套列表中插入对象。我得到了json响应，它不会为某个条件返回某个特定对象

data.json

data.json

Note: in 'steps' list, the 3rd index did not return result

注意：在'steps'列表中，第3个索引没有返回结果

[
{
  "elements": [
    {
      "keyword": "Scenario", 
      "name": "valid user can login site", 
      "steps": [
        {
          "name": "a valid user name and password", 
          "result": {
            "status": "passed"
          }
        }, 
        { 
          "name": "a valid user clicking on the login button after typing in user name and password", 
          "result": { 
            "status": "passed"
          }
        }, 
        { 
          "name": "map should display" 
        }
      ]
    }
  ], 
  "keyword": "Feature", 
  "name": "login", 
  "status": "passed"
}
]

What I want to achieve:

我想要实现的目标：

I want to insert a 'result' object if it is absent

如果不存在，我想插入'result'对象

[
{
  "elements": [
    {
      "keyword": "Scenario", 
      "name": "valid user can login site", 
      "steps": [
        {
          "name": "a valid user name and password", 
          "result": {
            "status": "passed"
          }
        }, 
        { 
          "name": "a valid user clicking on the login button after typing in user name and password", 
          "result": { 
            "status": "passed"
          }
        }, 
        { 
          "name": "map should display" 
          "result": { 
            "status": "skipped"
          }
        }
      ]
    }
  ], 
  "keyword": "Feature", 
  "name": "login", 
  "status": "passed"
}
]

What i've done so far (pseudo):

到目前为止我做了什么（伪）：

with open('data.json') as data_file:  
     data = json.load(data_file) 

#nested for loops??
#if x.has_key('result') == False
#insert result object

1 个解决方案

#1

The following should word for you:

以下应该告诉你：

for step in data[0]['elements'][0]['steps']:
    if 'result' not in step:
        step['result'] = {"status": "skipped"}

More generic solution:

更通用的解决方案

for d in data:
    for element in d['elements']:
        for step in element['steps']:
            if 'result' not in step:
                step['result'] = {"status": "skipped"}