Python 列表索引必须是整数或切片，而不是 str

Question

Assuming my json response looks like this:

{
  "classifier_id" : "12345",
  "url" : "https://something.com",
  "text" : "text",
  "top_class" : "class1",
  "classes" : [ {
    "class_name" : "car",
    "confidence" : 0.9862312904583641
  }, {
    "class_name" : "bus",
    "confidence" : 0.013768709541636032
  } ]
}

with the underlying GET request being

callIBM = requests.get(
    url="https://something.com",
    params={
        "text": update.message.text,
    },
    headers={
        "Authorization": "XXX",
    },
)

and I want to parse the result in python.

I tried:

ibmscore1 = '{}'.format(callIBM.json()["classes"][0]["class_name"]["confidence"])
ibmscore2 = '{}'.format(callIBM.json()["classes"][1]["class_name"]["confidence"])

but it's not working. Could one kindly assist a python newby?

Answer 1

You are trying to access confidence inside class_name but class_name is not a dictionary.

Try:

resp = callIBM.json()
class1, conf1 = resp["classes"][0]["class_name"], resp["classes"][0]["confidence"]
class2, conf2 = resp["classes"][1]["class_name"], resp["classes"][0]["confidence"]