e.html#ratansunpy.time.timerange.TimeRange.shift_forward">[docs]</a>    <span class="k">def</span> <span class="nf">shift_forward</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">delta</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">TimeDelta</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="s1">&#39;self&