eros</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">x</span><span class="p">)),</span>
            <span class="n">numpy</span><span class="o">.</span><span class="n">zeros</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">x</span><span class="p">),</span> <span class="nb">complex</span><span class="p">),</span>
            <span class="n">numpy</span><span class="o">.</span><span class="n">zeros</span><span cla