="n">_proj_bounds</span>
        <span class="k">return</span> <span class="p">(</span>
            <span class="n">math</span><span class="o">.</span><span class="n">ceil</span><span class="p">((</span><span class="n">right</span> <span class="o">-</span> <span class="n">left</span><span class="p">)</span> <span class="o">/</span> <span class="bp">self</span><span class="o">.</span><span class="n">scale</span> <span class="o">/</span> <span class="n">chunksize</span><span class="p">),</span>
            <s