How to compare 2 json files and merge in one with python

Nico
February 11, 2024
182 views
0 votes
2 Answers

Im trying to compare if a value from jsonA(deployed_devices) exists in jsonB(assigned_components) and merge them into one new json Object. The goal is to iterate over every asset_it in the deployed_devices json and check if and where the asset_id matches witch the id in assigned_components[data][rows] and generate a new JSON. Heres my current code which generates a new json but leaves the ‘Components’ in the new JSON(matched_devices) completely empty:

def match_device_components(assigned_components, deployed_devices):
    matched_devices = []

    for component_entry in assigned_components:
        for component_name, component_data in component_entry.items():
            component_rows = component_data.get('data', {}).get('rows', [])

            assigned_component_ids = {component["id"] for component in component_rows}

            for device in deployed_devices:
                matched_components = []

                for component in component_rows:
                    if component["id"] == device["asset_id"]:
                        matched_components.append(component["name"])

                matched_device = {
                    "model_name": device["model_name"],
                    "asset_tag": device["asset_tag"],
                    "asset_id": device["asset_id"],
                    "components": matched_components
                }

                matched_devices.append(matched_device)

    return matched_devices

Those are the JSON to work with (cropped the output a bit for better overview):

deployed_devices = [
    {
        "model_name": "RACK/BOX",
        "asset_tag": "X-0043",
        "asset_id": "234"
    },
    .... more devices ... 
]

assigned_components = [
   {
      "Camera":{
         "id":70,
         "name":"Camera",
         "user_can_checkout":1,
         "available_actions":{
            "checkout":true,
            "checkin":true,
            "update":true,
            "delete":true
         }
      },
      "data":{
         "total":52,
         "rows":[
            {
               "assigned_pivot_id":710,
               "id":133,
               "name":"BOX 25x17x21",
               "qty":2,
               "note":"",
               "type":"asset",
               "created_at":{
                  "datetime":"2024-01-15 11:59:06",
                  "formatted":"15.01.2024 11:59"
               },
               "available_actions":{
                  "checkin":true
               }
            },
            ... many more rows ... 
         ]
      }
   },
   {
      "LED":{
         "id":69,
         "name":"LED ",
         "user_can_checkout":1,
         "available_actions":{
            "checkout":true,
            "checkin":true,
            "update":true,
            "delete":true
         }
      },
      "data":{
         "total":10,
         "rows":[
            {
               "assigned_pivot_id":823,
               "id":57,
               "name":"BOX 25x17x21",
               "qty":1,
               "note":"None",
               "type":"asset",
               "created_at":{
                  "datetime":"2024-01-22 10:50:34",
                  "formatted":"22.01.2024 10:50"
               },
               "available_actions":{
                  "checkin":true
               }
            },
            ... many more rows ... 
         ]
      }
   }
]

Answers

Chosen as BEST ANSWER

I managed to get it working with the following code:

def match_device_components(assigned_components, deployed_devices):
    result = []
    for device in deployed_devices:
        components = []
        for component in assigned_components:
            currentcomponentname = list(component.keys())[0]
            for assigned_device in component['data']['rows']:
                if int(device['asset_id']) == int(assigned_device['id']):
                    components.append(currentcomponentname)
                    break

        result.append({ 
            'asset_id': device['asset_id'],
            'asset_tag': device['asset_tag'],
            'model_name': device['model_name'],
            'components': components
        })

    return result

(Edit)

Ok let’s solve this issue:

You code is a bit confused because your for loops actually doesn’t give any result, so I advise you to ‘print’ your variables to understand what are you doing;
You are talking about JSON format so the better way to manage JSON database is to use dedicated python package;
Your question is a bit unclear.

Having said that, here’s the solution:

def match_device_components(assigned_components, deployed_devices):
   matched_devices = []
   matched_components = []

   for components in json.loads(json.dumps(assigned_components)):
       c_id=components['data']['rows'][0]['id']
       # print(c_id)

   for device in json.loads(json.dumps(deployed_devices)):
       d_id=device['asset_id']
       # print(d_id)

   if int(c_id) == int(d_id):
       matched_components.append(components['data']['rows'][0]['name'])

       matched_device = {
           "model_name": device["model_name"],
           "asset_tag": device["asset_tag"],
           "asset_id": device["asset_id"],
           "components": matched_components
       }

       matched_devices.append(matched_device)  
       print(json.dumps(matched_device, indent=4))

if __name__ == '__main__':
   match_device_components(assigned_components, deployed_devices)

This function will make this variable. I hope this is your goal.

{
    "model_name": "RACK/BOX",
    "asset_tag": "X-0043",
    "asset_id": "57",
    "components": [
        "BOX 25x17x21"
    ]
}

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