title: praw.errors.Forbidden: HTTP error when using Reddit get_flair_list
body: <p>I am trying to get the comments for each Reddit post.</p>
  
  <p>This is the way I am using to get flair list:</p>
  
  <pre><code>import praw
  import webbrowser
  
  r = praw.Reddit('OAuth testing example by u/_Daimon_ ver 0.1 see '
               'https://praw.readthedocs.org/en/latest/'
               'pages/oauth.html for source')
  
  r.set_oauth_app_info(client_id='[client id]',
                   client_secret='[client secret]',
                    redirect_uri='http://localhost/authorize_callback')
  
  url = r.get_authorize_url('uniqueKey', 'modflair', True)
  webbrowser.open(url)
  </code></pre>
  
  <p>Then I got the code from the returned url, and I put the code in the access information, like this:</p>
  
  <pre><code>access_information = r.get_access_information('[returned code]')
  </code></pre>
  
  <p>Then when I am trying to call get_fliar_list() just like PRAW tutorial, like this:</p>
  
  <pre><code>item = next(r.get_subreddit('travel').get_flair_list())
  </code></pre>
  
  <p>It gives me an error, showing:</p>
  
  <blockquote>
    <p>Traceback (most recent call last):
      File "", line 1, in 
      File "/Library/Python/2.7/site-packages/praw-3.4.0-py2.7.egg/praw/<strong>init</strong>.py", line 565, in get_content
        page_data = self.request_json(url, params=params)
      File "", line 2, in request_json
      File "/Library/Python/2.7/site-packages/praw-3.4.0-py2.7.egg/praw/decorators.py", line 116, in raise_api_exceptions
        return_value = function(*args, **kwargs)
      File "/Library/Python/2.7/site-packages/praw-3.4.0-py2.7.egg/praw/<strong>init</strong>.py", line 620, in request_json
        retry_on_error=retry_on_error)
      File "/Library/Python/2.7/site-packages/praw-3.4.0-py2.7.egg/praw/<strong>init</strong>.py", line 452, in _request
        _raise_response_exceptions(response)
      File "/Library/Python/2.7/site-packages/praw-3.4.0-py2.7.egg/praw/internal.py", line 208, in _raise_response_exceptions
        raise Forbidden(_raw=response)
    praw.errors.Forbidden: HTTP error</p>
  </blockquote>
  
  <p>Here's the link of that PRAW tutorial: <a href="https://praw.readthedocs.org/en/stable/" rel="nofollow">PRAW tutorial</a></p>
  
  <p>Do you know how to solve this problem? How can I call get_flair_list() to get all the comments of a Reddit post?</p>