erorr handling for when the thing doesn't have a valid ppm or temp but replies on spaceapi

import requests

import json

import datetime

from pathlib import Path

from flask import Flask, Response, abort

class Kronk:

    def __init__(self):

        self.ppm = 0

        self.panel_status = "init"

        self.panel = morbital.MatrixOrbitalPanel("/dev/ttyUSB0")

        self.space_status = "CLOSED"

        self.last_space_status_change = time.time()

        self.last_interaction_time = int(time.time())

        self.temperature = 0

        self.last_sensor_poll = int(time.time())

        self.tasks = []

        self.running = True

        # load last state if available

        if Path("kronk.conf").exists():

            with open("kronk.conf", "r") as f:

                config = json.load(f)

                f.close()

                if (config["space_status"] in self.status_options):

                    self.space_status = config["space_status"]

                    self.last_space_status_change = config["last_space_status_change"]

                else:

                    self.space_status = "CLOSED"

                    self.last_space_status_change = time.time()

                print(f"Loaded previous state: {config}")

        else:

            self.space_status = "CLOSED"

            self.last_space_status_change = time.time()

            f = open("kronk.conf", "w")

            f.write(json.dumps(

                {'space_status': self.space_status, 'last_space_status_change': self.last_space_status_change}))

            f.close()

    def airquality_update(self):

        # if PPM CO2 is <1000, green light for bottom LED

        if self.ppm < 1000:

            headers = {"User-Agent": "devhack kronk/python requests"}

            url = "https://devhack.net/spaceapi.json"

            sensors = requests.get(url, headers=headers).json()

            if (sensors["sensors"]["temperature"][0]["value"] is not None):

                self.temperature = sensors["sensors"]["temperature"][0]["value"]

            else:

                self.temperature = 0

            if (sensors["sensors"]["humidity"][1]["value"] is not None):

                self.ppm = sensors["sensors"]["humidity"][1]["value"]

        except (IndexError, requests.exceptions.RequestException) as e:

            else:

                self.ppm = 0

        except (TypeError, IndexError, requests.exceptions.RequestException) as e:

            print(f"error polling: {e}")

            self.temperature = 0

            self.ppm = 0

                self.panel_status = "awake"

                # redraw panel

                self.full_draw()

            if char == "E" and self.panel_status not "in_menu":

            if char == "E" and self.panel_status != "in_menu":

                self.panel_status = "in_menu"

                self.draw_space_update_menu()

        if (self.panel_status == "in_menu" and self.menus[self.menu_index] == "DOORHOLD"):