Reddit API returning useless JSON

I'm trying to scrape new stories from Reddit using their API and Python's urllib2, but I keep getting JSON documents like this one:

{ u'kind': u'Listing', u'data': { u'modhash': u'', u'children': [], u'after': None, u'before': None }}

Here is my code:

import json
import time
import urllib2

def get_submissions(after=None):
    url = 'http://reddit.com/r/all/new.json?limit=100'
    if after:
        url += '&after=%s' % after

    _user_agent = 'Reddit Link Analysis Bot by PirateLogic @ github.com/jamesbrewer'
    _request = urllib2.Request(url, headers={'User-agent': _user_agent})
    _json = json.loads(urllib2.urlopen(_request).read())   

    return [story for story in _json['data']['children']], _json['data']['after']

if __name__ == '__main__':
    after = None
    stories = []
    limit = 1
    while len(stories) < limit:
        new_stories, after = get_submissions(after)
        stories.extend(new_stories)
        time.sleep(2) # The Reddit API allows one request every two seconds.
        print '%d stories collected so far .. sleeping for two seconds.' % len(stories)

What I've written is fairly short and straight-forward, but I'm obviously overlooking something or I don't have a complete understanding of the API or how urllib2 works.

Here's an example page from the API.

What's the deal?

EDIT After trying to load the example page in another browser, I'm also seeing the JSON I posted at the top of the page. It seems to be only for //new.json though. If I try //hot.json or just /.json, I get what I want.

Solution

Edit: As of 2013/02/22, the desired new sort no longer requires sort=new to be added as a URL parameter. This is because the rising sort is no longer provided under the /new route, but is provided by /rising [source].

The problem with the URL http://reddit.com/r/all/new.json?limit=100 is that the new pages by default use the rising sort. If you are logged in, and you have changed the default sort to new then what you really see is the result for the page http://reddit.com/r/all/new.json?limit=100&sort=new. Notice the addition of the parameter sort=new.

Thus the result is correct, it is just that the rising view has not been updated for /r/all.

On a related note, I strongly suggest using PRAW (the python reddit API wrapper) rather than writing your own code if you plan to use more than just a single part of the API. Here's the relevant code that you want:

import praw
r = praw.Reddit('YOUR DESCRIPTIVE USER AGENT NAME')
listing = list(r.get_subreddit('all').get_new_by_date())
print listing

If you simply want to iterate over the submissions you can omit the list() part.