主连映射主力合约问题

主连映射主力合约，主力合约切换，是否自动移仓？

<span class="kn">from</span> <span class="nn">tqsdk</span> <span class="kn">import</span> <span class="n">TqApi</span>

<span class="n">api</span> <span class="o">=</span> <span class="n">TqApi</span><span class="p">()</span>

<span class="c1"># 订阅螺纹钢主连</span>
<span class="n">quote</span> <span class="o">=</span> <span class="n">api</span><span class="o">.</span><span class="n">get_quote</span><span class="p">(</span><span class="s2">"KQ.m@SHFE.rb"</span><span class="p">)</span>
<span class="c1"># 打印现在螺纹钢主连的标的合约</span>
<span class="nb">print</span><span class="p">(</span><span class="n">quote</span><span class="o">.</span><span class="n">underlying_symbol</span><span class="p">)</span>

<span class="n">api</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>