Flask-ask tutorial sample application

app.py

#!/usr/bin/env python

from flask import Flask                  #Importing the main class
from flask_ask import Ask, statement     #Importing Alexa class
import picamera
from datetime import datetime
from crontab import CronTab

app = Flask(__name__)                    #Initializing the app
ask  = Ask(app, '/')                     #Initializing Alexa functionality around app

@app.route('/')
def home():
    return 'Hi! I am CentiPi'

@ask.intent('helloCentiPi')
def hello():
    speech_text = 'Hello there!'
    return statement(speech_text).simple_card(title='CentiPi says', content= 
                                               speech_text)
@ask.intent('photoCentiPi')
def photo():
    camera = picamera.PiCamera()    #initialize the camera
    camera.capture('my_pic.jpg')    #take a photo!
    pic = '/home/pi/my_pic.jpg' 
    speech_text = 'Here is your picture!'
    return statement(speech_text).display_render(template='BodyTemplate7', title='CentiPi', backButton='HIDDEN', background_image_url=pic)

@ask.intent('scheduleCentiPi')
def schedule(date, time):
    cron = CronTab(user='pi')
    job = cron.new('python /home/pi/take_picture.py')
    dd = date + ' ' + time
    job_date = datetime.strptime(dd, '%Y-%m-%d %H:%M')
    job.setall(job_date)
    cron.write()
    speech_text = "Ok. I've got it scheduled for {} at {}".format(date,time)
    return statement(speech_text)

if __name__ == "__main__":
    app.run()