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  <h1>Source code for macop.operators.discrete.mutators</h1><div class="highlight"><pre>
<span></span><span class="sd">&quot;&quot;&quot;Mutation implementations for discrete solution</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="c1"># main imports</span>
<span class="kn">import</span> <span class="nn">random</span>
<span class="kn">import</span> <span class="nn">sys</span>

<span class="c1"># module imports</span>
<span class="kn">from</span> <span class="nn">..base</span> <span class="kn">import</span> <span class="n">Mutation</span>


<div class="viewcode-block" id="SimpleMutation"><a class="viewcode-back" href="../../../../macop/macop.operators.discrete.mutators.html#macop.operators.discrete.mutators.SimpleMutation">[docs]</a><span class="k">class</span> <span class="nc">SimpleMutation</span><span class="p">(</span><span class="n">Mutation</span><span class="p">):</span>
    <span class="sd">&quot;&quot;&quot;Mutation implementation for binary solution, swap two bits randomly from solution</span>

<span class="sd">    Attributes:</span>
<span class="sd">        kind: {KindOperator} -- specify the kind of operator</span>

<span class="sd">    Example:</span>

<span class="sd">    &gt;&gt;&gt; # import of solution and simple mutation operator</span>
<span class="sd">    &gt;&gt;&gt; from macop.solutions.discrete import BinarySolution</span>
<span class="sd">    &gt;&gt;&gt; from macop.operators.discrete.mutators import SimpleMutation</span>
<span class="sd">    &gt;&gt;&gt; solution = BinarySolution.random(5)</span>
<span class="sd">    &gt;&gt;&gt; list(solution._data)</span>
<span class="sd">    [1, 0, 0, 0, 1]</span>
<span class="sd">    &gt;&gt;&gt; mutator = SimpleMutation()</span>
<span class="sd">    &gt;&gt;&gt; mutation_solution = mutator.apply(solution)</span>
<span class="sd">    &gt;&gt;&gt; list(mutation_solution._data)</span>
<span class="sd">    [0, 0, 1, 0, 1]</span>
<span class="sd">    &quot;&quot;&quot;</span>
<div class="viewcode-block" id="SimpleMutation.apply"><a class="viewcode-back" href="../../../../macop/macop.operators.discrete.mutators.html#macop.operators.discrete.mutators.SimpleMutation.apply">[docs]</a>    <span class="k">def</span> <span class="nf">apply</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">solution</span><span class="p">):</span>
        <span class="sd">&quot;&quot;&quot;Create new solution based on solution passed as parameter</span>

<span class="sd">        Args:</span>
<span class="sd">            solution: {Solution} -- the solution to use for generating new solution</span>

<span class="sd">        Returns:</span>
<span class="sd">            {Solution} -- new generated solution</span>
<span class="sd">        &quot;&quot;&quot;</span>

        <span class="n">size</span> <span class="o">=</span> <span class="n">solution</span><span class="o">.</span><span class="n">_size</span>

        <span class="n">firstCell</span> <span class="o">=</span> <span class="mi">0</span>
        <span class="n">secondCell</span> <span class="o">=</span> <span class="mi">0</span>

        <span class="c1"># copy of solution</span>
        <span class="n">copy_solution</span> <span class="o">=</span> <span class="n">solution</span><span class="o">.</span><span class="n">clone</span><span class="p">()</span>

        <span class="k">while</span> <span class="n">firstCell</span> <span class="o">==</span> <span class="n">secondCell</span><span class="p">:</span>
            <span class="n">firstCell</span> <span class="o">=</span> <span class="n">random</span><span class="o">.</span><span class="n">randint</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">size</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span>
            <span class="n">secondCell</span> <span class="o">=</span> <span class="n">random</span><span class="o">.</span><span class="n">randint</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">size</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span>

        <span class="n">temp</span> <span class="o">=</span> <span class="n">copy_solution</span><span class="o">.</span><span class="n">_data</span><span class="p">[</span><span class="n">firstCell</span><span class="p">]</span>

        <span class="c1"># swicth values</span>
        <span class="n">copy_solution</span><span class="o">.</span><span class="n">_data</span><span class="p">[</span><span class="n">firstCell</span><span class="p">]</span> <span class="o">=</span> <span class="n">copy_solution</span><span class="o">.</span><span class="n">_data</span><span class="p">[</span><span class="n">secondCell</span><span class="p">]</span>
        <span class="n">copy_solution</span><span class="o">.</span><span class="n">_data</span><span class="p">[</span><span class="n">secondCell</span><span class="p">]</span> <span class="o">=</span> <span class="n">temp</span>

        <span class="k">return</span> <span class="n">copy_solution</span></div></div>


<div class="viewcode-block" id="SimpleBinaryMutation"><a class="viewcode-back" href="../../../../macop/macop.operators.discrete.mutators.html#macop.operators.discrete.mutators.SimpleBinaryMutation">[docs]</a><span class="k">class</span> <span class="nc">SimpleBinaryMutation</span><span class="p">(</span><span class="n">Mutation</span><span class="p">):</span>
    <span class="sd">&quot;&quot;&quot;Mutation implementation for binary solution, swap bit randomly from solution</span>

<span class="sd">    Attributes:</span>
<span class="sd">        kind: {KindOperator} -- specify the kind of operator</span>

<span class="sd">    Example:</span>

<span class="sd">    &gt;&gt;&gt; # import of solution and simple binary mutation operator</span>
<span class="sd">    &gt;&gt;&gt; from macop.solutions.discrete import BinarySolution</span>
<span class="sd">    &gt;&gt;&gt; from macop.operators.discrete.mutators import SimpleBinaryMutation</span>
<span class="sd">    &gt;&gt;&gt; solution = BinarySolution.random(5)</span>
<span class="sd">    &gt;&gt;&gt; list(solution._data)</span>
<span class="sd">    [0, 1, 0, 0, 0]</span>
<span class="sd">    &gt;&gt;&gt; mutator = SimpleBinaryMutation()</span>
<span class="sd">    &gt;&gt;&gt; mutation_solution = mutator.apply(solution)</span>
<span class="sd">    &gt;&gt;&gt; list(mutation_solution._data)</span>
<span class="sd">    [1, 1, 0, 0, 0]</span>
<span class="sd">    &quot;&quot;&quot;</span>
<div class="viewcode-block" id="SimpleBinaryMutation.apply"><a class="viewcode-back" href="../../../../macop/macop.operators.discrete.mutators.html#macop.operators.discrete.mutators.SimpleBinaryMutation.apply">[docs]</a>    <span class="k">def</span> <span class="nf">apply</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">solution</span><span class="p">):</span>
        <span class="sd">&quot;&quot;&quot;Create new solution based on solution passed as parameter</span>

<span class="sd">        Args:</span>
<span class="sd">            solution: {Solution} -- the solution to use for generating new solution</span>

<span class="sd">        Returns:</span>
<span class="sd">            {Solution} -- new generated solution</span>
<span class="sd">        &quot;&quot;&quot;</span>

        <span class="n">size</span> <span class="o">=</span> <span class="n">solution</span><span class="o">.</span><span class="n">_size</span>
        <span class="n">cell</span> <span class="o">=</span> <span class="n">random</span><span class="o">.</span><span class="n">randint</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">size</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span>

        <span class="c1"># copy of solution</span>
        <span class="n">copy_solution</span> <span class="o">=</span> <span class="n">solution</span><span class="o">.</span><span class="n">clone</span><span class="p">()</span>

        <span class="c1"># swicth values</span>
        <span class="k">if</span> <span class="n">copy_solution</span><span class="o">.</span><span class="n">_data</span><span class="p">[</span><span class="n">cell</span><span class="p">]:</span>
            <span class="n">copy_solution</span><span class="o">.</span><span class="n">_data</span><span class="p">[</span><span class="n">cell</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span>
        <span class="k">else</span><span class="p">:</span>
            <span class="n">copy_solution</span><span class="o">.</span><span class="n">_data</span><span class="p">[</span><span class="n">cell</span><span class="p">]</span> <span class="o">=</span> <span class="mi">1</span>

        <span class="k">return</span> <span class="n">copy_solution</span></div></div>
</pre></div>

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