Json fields not being retrieved

[mrcurious2020]

I am trying to read a json file using the below. I am unable to retrieve values though. I'd appreciate a correction to the code below please.

import json
import sys
import os

    content  = None
    with open("s.json", "r") as f:
        content = list(json.load(f))
    
    #build a list of values of location, name and state:
    for entry in content:
        tmp_list = [entry.get('location'), entry.get('name'), entry.get('state')]
        print(tmp_list)


#file:s.json

{
    "environment-sensor": [
        {
            "current-reading": 0,
            "high-critical-threshold": 0,
            "high-normal-threshold": 0,
            "location": "P0",
            "low-critical-threshold": 0,
            "low-normal-threshold": 0,
            "name": "PEM Iout",
            "sensor-name": "current",
            "sensor-units": "amperes",
            "state": "Normal"
        }
    ]
}