OctoPrint- Emergency Stop and Reprint Buttons

button-control.py

API = ""

import RPi.GPIO as GPIO
import time
import json
import requests

headers = {'X-Api-Key': API,"Content-Type":"application/json"}

GPIO.setmode(GPIO.BCM)
GPIO.setup(11, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(26, GPIO.IN, pull_up_down=GPIO.PUD_UP)

while True:
    input_go_state = GPIO.input(11)
    if input_go_state == True:
        print('START Button Pressed: ')
        time.sleep(0.2)
        url = 'http://127.0.0.1/api/job'
        s = requests.Session()
        r = json.loads((requests.get(url, headers=headers)).content)["state"]
        print r
        if r != "Printing":
                print ('Starting printing')
                contents = json.dumps({"command":"start"})
                requests.post(url, data=contents, headers=headers)

    input_stop_state = GPIO.input(26)
    if input_stop_state == True:
        print('STOP Button Pressed: ')
        time.sleep(0.2)
        job_url = 'http://127.0.0.1/api/job'
        head_url = 'http://127.0.0.1/api/printer/printhead'
        s = requests.Session()
        r = json.loads((requests.get(job_url, headers=headers)).content)["state"]
        print r
        if r == "Printing":
                print ('Stopping printing')
                print_contents = json.dumps({"command":"cancel"})
                head_contents = json.dumps({"command": "home","axes": ["x", "y"]})

                requests.post(job_url, data=print_contents, headers=headers)
                requests.post(head_url, data=head_contents, headers=headers)