amic.py

import urllib2
import time

previous = -1
def main():
	while True:
		GetData()
		time.sleep(30)

def GetData():
	global previous
	file = urllib2.urlopen("http://amomentincrime.s3.amazonaws.com/index.html").read()
	
	splited = file.split("activos...")
	value = splited[1].split("<br>")[0].strip()
	
	diff = "N/A"
	if previous == -1:
		previous = float(value[:-1])
	else:
		new_val = float(value[:-1])
		diff = new_val - previous
		previous = new_val
		diff = float("{0:.4f}".format(diff))
		diff = str(diff)
		diff += "%"
		
	print value + " - " + diff
		
if __name__ == "__main__":
	main()