ifier">reset</span></span></tt> or <tt class="docutils literal"><span class="pre"><span class="Identifier">commit</span></span></tt>. Use <tt class="docutils literal"><span class="pre"><span class="Identifier">reset</span></span></tt> if you only read data, or you want to throw away all writes. Use <tt class="docutils literal"><span class="pre"><span class="Identifier">commit</span></span></tt> to actually perform all the writes.</p>
<pre class="listing"><span class="Keyword">import</span> <span class="Iden