p">(</span><span class="mi">0</span><span class="p">)</span>
    <span class="n">magic</span> <span class="o">=</span> <span class="n">gf</span><span class="o">.</span><span class="n">read</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span>
    <span class="k">if</span> <span class="n">magic</span> <span class="o">!=</span> <span class="sa">b</span><span class="s1">'</span><span class="se">\037\213</span><span class="s1">'</span><span class="p">:</span>
        <span class="k">ra