a name="l2h-129"><tt class=

            "method">__getitem__</tt></a></b>(<var>self, key</var>)

          </dt>

          <dd>

            Called to implement evaluation of

            <code><var>self</var>[<var>key</var>]</code>. For sequence types,

            the accepted keys should be integers and slice

                objects.<a name="l2h-135">&nbsp;</a> Note that the special

                interpretation of negative indexes (if the class wishes to

                emulate a sequence