lass="n">_n_shifts</span><span class="p">,</span> <span class="mi">0</span><span class="p">):</span>
</span><span id="Sublosses.window_diff-43"><a href="#Sublosses.window_diff-43"><span class="linenos">43</span></a>        <span class="n">_this_roll</span> <span class="o">=</span> <span class="n">tf</span><span class="o">.</span><span class="n">roll</span><span class="p">(</span><span class="n">_mask</span><span class="p">,</span> <span class="n">shift</span><span class="o">=</span><span class="n">_n_shifts