title: How do I find what value to pass to uncheck a checkbox?
body: <p>How do I pass a url and uncheck a checkbox in a post request.</p>
  
  <p>The HTML looks like this:</p>
  
  <pre><code>&lt;input type="checkbox" name="encodeURL" ID="encodeURL" checked="checked"&gt;
  </code></pre>
  
  <p>I am using <a href="http://docs.python-requests.org/en/latest/user/quickstart/#passing-parameters-in-urls" rel="nofollow">requests</a>, a 3rd party python library, like so:</p>
  
  <pre><code>payload = {'u': 'http://www.google.com', 'encodeURL': '0'}
  r = requests.post('http://www.website.com/', data=payload)
  </code></pre>
  
  <p>So far setting 'encodeURL' to '0', 'unchecked', '' and 0 is NOT posting the request with the checkbox unchecked.
  How do I find what value to pass to 'encodeURL' in order to uncheck the checkbox?</p>