gistfile1.txt

import urllib.request
import json
import time
 
filename="data.json"
url = "https://api.bitcoinaverage.com/no-mtgox/ticker/USD"

while(1):
  request = urllib.request.Request(url)
  response = urllib.request.urlopen(request)
  data=json.load(response.read().decode('utf-8'))
  fh = open(filename, "w")
  json.dump(data, fh)
  fh.close()
  time.sleep(30)