doorbell.py

import wiringpi2
import http.client, urllib

def dingdong():
    conn = http.client.HTTPSConnection("api.pushover.net:443")
    conn.request("POST", "/1/messages.json",
            urllib.parse.urlencode({
                "token": "token",
                "user": "user",
                "message": "Ding Dong!",
                "priority": 1,
                }), { "Content-type": "application/x-www-form-urlencoded" })
    conn.getresponse()

wiringpi2.wiringPiSetup()
wiringpi2.pinMode(5, 0)

while (1):
    wire = wiringpi2.digitalRead(5)
    #print(wire)
    if (wire == 1):
        #print("Ding Dong!\n")
        dingdong()
        wiringpi2.delay(5000)
    wiringpi2.delay(100)