Subreddit ranking tracker

SubredditTracker.py

import requests, webbrowser

def get_frontpage_info():
	url = "http://www.reddit.com/.json" 
	r = requests.get(url)

	json_data = r.json()

	
	try:
		if json_data['error'] == 404:
			print "404 error, website is down"
			exit()
	except KeyError:
		pass
	try:
		all_posts =  json_data["data"]['children']
	except KeyError:
		all_posts =  json_data['data']['children']
	
	#for key in json_data['data']['children'][0]['data'].keys():
	#	print json_data['data']['children'][0]['data'][key]
	# max post on front page = 25 as of 10/20/14

	for post in all_posts:
		try:
			subreddit_rankings[post['data']['subreddit']] += 1
			# if the subreddit has never been in before, set default count to 1
		except KeyError:
			subreddit_rankings[post['data']['subreddit']]  = 1
	return subreddit_rankings
			
def store_stats():
	file = open("stats.txt", "wb")
	file.write(str(subreddit_rankings))
	file.close()
		    
def retrieve_stats():
	s = open('stats.txt', 'r').read()
	updated_dict = eval(s)
	return updated_dict
if __name__ == "__main__":
    subreddit_rankings = retrieve_stats()
    get_frontpage_info()
    store_stats()