How to locate a value based on another value within the same key? Python & JSON-CodePudding

I'm a new programmer and whilst I've searched for similar questions, I may need some direct help on this problem of mine. I have a data structure which is being returned in Python from an API I'm interacting with.

The data structure is like this:

{
  "account": "asdljasdjflallasjadsfkjlaasfd",
  "amount": [
    {
      "unit": "1019238741092834",
      "quantity": "1"
    },
    {
      "unit": "4893024890324830",
      "quantity": "2"
    },
    {
      "unit": "8374928483847485",
      "quantity": "3"
    },
    {
      "unit": "6574820387498457",
      "quantity": "4"
    }
  ],
  "subaccount": null,
  "type": "normal",
  "discrepancy": false
}

Is anyone able to tell me how to store the value "3" from "quantity": if all I know is "unit": "4893024890324830" which corresponds to it?

At the moment, I'm using json_object = json.loads(response.txt) and I can print and store values using json_object['amount'][1]['unit'] but that presumes I know the key/order of where the quantity I want is located within. The above is just a snippet, I have a large list including 1000 entries.

Thank you very much for your support in advance. First time using StackOverflow.

Cheers.

CodePudding user response：

If you know the unit value for e.g. "4893024890324830", then you can loop through the amount array and find the corresponding quantity using the unit value. Like this:

def storeQuanity(myval):
    for val in data["amount"]:
        if(val["unit"]==myval):
            print(val["quantity"])
storeQuanity("6574820387498457")