llo'):
        self.mixin = mixin

</textarea></div>
    <script>
      var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
        mode: {name: "python",
               version: 2,
               singleLineStringErrors: false},
        lineNumbers: true,
        indentUnit: 4,
        tabMode: "shift",
        matchBrackets: true
      });
    </script>
    <h2>Configuration Options:</h2>
    <ul>
      <li>version - 2/3 - The version of Python to recognize.  Default is 2.</li>
      <l