n> <span class="n">NonUnitaryState</span>
<span class="kn">from</span> <span class="nn">qwak.State</span> <span class="kn">import</span> <span class="n">State</span>
<span class="kn">from</span> <span class="nn">qwak.StochasticOperator</span> <span class="kn">import</span> <span class="n">StochasticOperator</span>
<span class="kn">from</span> <span class="nn">qwak.StochasticProbabilityDistribution</span> <span class="kn">import</span> <span class="n">StochasticProbabilityDistribution</span>
<span class="kn"