</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">sparse</span> <span class="o">=</span> <span class="n">sparse</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">periodic</span> <span class="o">=</span> <span class="n">periodic</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">dtype</span> <span class="o">=</span> <span class="n">dtype</span>
        <span class="bp">self</span><span class="o">.</span><span c