CODEWITHSUNDEEP
pythonjsonpython-3.xclasspython-3.8
Harrison O'Donnell
Harrison O'Donnell

Reputation: 36

Creating a object for instances in a json

So I have a JSON file

{
  "Vehicles": [
    {
      "Name": "Car",
      "ID": 1
    },
    {
      "Name": "Plane",
      "ID": 2
    }
  ]
}

and I created the class in python

class vehicleclass: 
    def __init__(self, vname, vid):
        self.name = vname
        self.id = vid

what I would like to do is create an instance of the object vehicles for each vehicle in the JSON, I am reading from the file as shown here

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

I then run this piece of code

for each in data['Vehicles']:

how do I create an instance of vehicleclass using each 'name' iteration in the JSON file

note I realize I can get the value for each 'name' by calling each['Name'] in the for loop

Upvotes: 0

Views: 207

Answers (1)

Vishal Singh
Vishal Singh

Reputation: 6234

from what I understand I think this should achieve it.

with open("vehicle.json") as json_file:  # opens your vehicles.json file

    # this will load your file object into json module giving you a dictionary if its a valid json
    data = json.load(json_file)

    # this list comprehension uses data dictionary to generate your vehicleclass instances
    vehicle_instances = [
        vehicleclass(vehicle["Name"], vehicle["ID"]) for vehicle in data["Vehicles"]
    ]

Upvotes: 1

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