Getting Started With Raspberry Pi, 4th Edition

Example 10-6. Modied source code for

hello-gpio.py

from ask import Flask, render_template

import datetime

from gpiozero import Button

app = Flask(__name__)

button1 = Button(24)

button2 = Button(25)

button3 = Button(26)

@app.route("/")

def hello():

now = datetime.datetime.now()

timeString = now.strftime("%Y-%m-%d%H:%M")

templateData = {

'title' : 'HELLO!',

'time' : timeString

}

return render_template('main.html', **templateData)

@app.route("/readPin/<pin>")

def readPin(pin)

try:

if pin == '23':

if button1.is_pressed:

response = "Pin number 23 is high!"

else:

response = "Pin number 23 is low!"

elif pin == '24':

if button2.is_pressed:

response = "Pin number 24 is ...