GetStockPriceDataLoop.py

import urllib2
import time
import datetime

stockToPull = 'AAPL','GOOG','MSFT','CMG','AMZN','EBAY','TSLA'

def pullData(stock):
	try:
		print 'Currently pulling', stock
		print str(datetime.datetime.fromtimestamp(time.time()).strftime('%Y-%m-%d %H:%M:%S'))
		urlToVisit='http://chartapi.finance.yahoo.com/instrument/1.0/' + stock + '/chartdata;type=quote;range=1y/csv'
		saveFileLine=stock+'.txt'
		try:
			readExistingData=open(saveFileLine,'r').read()
			splitExisting=readExistingData.split('\n')
			mostRecentLine=splitExisting[-2]
			lastUnix= int(mostRecentLine.split(',')[0])
		except Exception, e:
			print str(e)
			time.sleep(1)
			lastUnix=0
		saveFile = open(saveFileLine,'a')
		sourceCode=urllib2.urlopen(urlToVisit).read()
		splitSource=sourceCode.split('\n')

		for eachLine in splitSource:
			if 'values' not in eachLine:
				splitLine=eachLine.split(',')
				if len(splitLine)==6:
					if int(splitLine[0]) > int(lastUnix):
						lineToWrite  = eachLine+'\n'	
						saveFile.write(lineToWrite)
		saveFile.close()

		print 'Pulled', stock
		print 'sleeping.....'
		print str(datetime.datetime.fromtimestamp(time.time()).strftime('%Y-%m-%d %H:%M:%S'))
		time.sleep(1)

	except Exception,e:
		print 'main loop', str(e)
 # while True: you can uncomment this to make it run forever

	for eachStock in stockToPull:
		pullData(eachStock)
	time.sleep(1)