title: How to read the state of an HTML checkbox in Python / flask
body: <p>I've built a working web page and python/flask program but cannot figure out how to read the state of a webpage checkbox in the python code.  I've figured out how to <strong>set</strong> a checkbox from python, just not how to read it.  Here is the html for one of the checkboxes:</p>
  
  <pre><code>&lt;div class="slideThree"&gt;    
      &lt;input type="checkbox" value="None" id="chk_01" name="chk_01" {{chk_01_checked}}/&gt;
      &lt;label for="chk_01"&gt;&lt;/label&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>The html code is in a separate file from the python program.  It looks like I need to use some combination of 'request' or 'get' instructions but cannot find clear examples on how to do it.  I'm a novice in both python and html, so any help appreciated.  </p>