lement</span><span class="op">,</span> <span class="nam">tostring</span>&nbsp;</span><span class="r"></span></p>
    <p class="pln"><span class="n"><a id="t5" href="#t5">5</a></span><span class="t">&nbsp;</span><span class="r"></span></p>
    <p class="mis show_mis"><span class="n"><a id="t6" href="#t6">6</a></span><span class="t"><span class="key">import</span> <span class="nam">numpy</span> <span class="key">as</span> <span class="nam">np</span>&nbsp;</span><span class="r"></span></p>
    <p class="pln"><