switch-controller.py

from time import sleep
import RPi.GPIO as GPIO
import urllib2
import xml.etree.ElementTree as ET

GPIO.setmode(GPIO.BCM)
INPUT_PIN = 10
GPIO.setup(INPUT_PIN, GPIO.IN)

last_state = False

while True:

    if GPIO.input(INPUT_PIN) == True and last_state == False:
        last_state = True
        xml = urllib2.urlopen("http://192.168.1.100/" +
                            "current_state.xml?pw=admin").read()
        rly_state = ET.fromstring(xml).find('Relay12/State').text
        if (rly_state == '0'):
            urllib2.urlopen("http://192.168.1.100/" +
                            "current_state.xml?pw=admin&Relay12=1").read()
        else:
            urllib2.urlopen("http://192.168.1.100/" +
                            "current_state.xml?pw=admin&Relay12=0").read()
    elif (GPIO.input(INPUT_PIN) == False and last_state == True):
        last_state = False
        xml = urllib2.urlopen("http://192.168.1.100/" +
                            "current_state.xml?pw=admin").read()
        rly_state = ET.fromstring(xml).find('Relay12/State').text
        if (rly_state == '0'):
            urllib2.urlopen("http://192.168.1.100/" +
                            "current_state.xml?pw=admin&Relay12=1").read()
        else:
            urllib2.urlopen("http://192.168.1.100/" +
                            "current_state.xml?pw=admin&Relay12=0").read()
    else:
        print 'idle'
        sleep(1)