how to get google authorization code
<p>Im using <a href="https://developers.google.com/fusiontables/docs/articles/oauthfusiontables" rel="nofollow">Google tutorial</a> to get access token for my web application. but in the following steps:</p>

<ol>
<li>Your web application redirects the user to Google Authorization page</li>
<li>User grants your web application access</li>
<li>Google redirects the user back to your web application and returns an authorization code</li>
</ol>

<p>I dont know how to get this authorization code ? actually  in my python code I dont know how to get "auth_code" </p>

<pre><code>data = urllib.urlencode({
'code': auth_code,
 'client_id': client_id,
  'client_secret': client_secret,
 'redirect_uri': redirect_uri,
 'grant_type': 'authorization_code'
   })
</code></pre>