.

      These involve implementing wrapper functions for the methods

      <strong>__len__</strong>, <strong>__getitem__</strong>,

      <strong>__setitem__</strong>, <strong>__delitem__,</strong>

      <strong>__iter__</strong> and <strong>__contains</strong>.

    </p>

    <p>

      The goals:

    </p>

    <ul>

      <li>

        <div>

          Make indexable C++ containers behave exactly as one would expect a

          Python container to behave.

        </div>

      </li>

