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  <h1>Source code for macop.callbacks.Callback</h1><div class="highlight"><pre>
<span></span><span class="sd">&quot;&quot;&quot;Abstract Checkpoint class</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="c1"># main imports</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="kn">import</span> <span class="nn">logging</span>
<span class="kn">from</span> <span class="nn">abc</span> <span class="kn">import</span> <span class="n">abstractmethod</span>


<div class="viewcode-block" id="Callback"><a class="viewcode-back" href="../../../macop/macop.callbacks.Callback.html#macop.callbacks.Callback.Callback">[docs]</a><span class="k">class</span> <span class="nc">Callback</span><span class="p">():</span>
    <span class="sd">&quot;&quot;&quot;</span>
<span class="sd">    Callback abstract class in order to compute some instruction every evaluation</span>

<span class="sd">    Attributes:</span>
<span class="sd">        algo: {Algorithm} -- main algorithm instance reference</span>
<span class="sd">        every: {int} -- checkpoint frequency used (based on number of evaluations)</span>
<span class="sd">        filepath: {str} -- file path where checkpoints will be saved</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">every</span><span class="p">,</span> <span class="n">filepath</span><span class="p">):</span>

        <span class="bp">self</span><span class="o">.</span><span class="n">_algo</span> <span class="o">=</span> <span class="kc">None</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_every</span> <span class="o">=</span> <span class="n">every</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_filepath</span> <span class="o">=</span> <span class="n">filepath</span>

        <span class="c1"># build path if not already exists</span>
        <span class="n">head</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_filepath</span><span class="p">)</span>

        <span class="k">if</span> <span class="ow">not</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">exists</span><span class="p">(</span><span class="n">head</span><span class="p">):</span>
            <span class="n">os</span><span class="o">.</span><span class="n">makedirs</span><span class="p">(</span><span class="n">head</span><span class="p">)</span>

<div class="viewcode-block" id="Callback.setAlgo"><a class="viewcode-back" href="../../../macop/macop.callbacks.Callback.html#macop.callbacks.Callback.Callback.setAlgo">[docs]</a>    <span class="k">def</span> <span class="nf">setAlgo</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">algo</span><span class="p">):</span>
        <span class="sd">&quot;&quot;&quot;Specify the main algorithm instance reference</span>

<span class="sd">        Args:</span>
<span class="sd">            algo: {Algorithm} -- main algorithm instance reference</span>
<span class="sd">        &quot;&quot;&quot;</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_algo</span> <span class="o">=</span> <span class="n">algo</span></div>

<div class="viewcode-block" id="Callback.run"><a class="viewcode-back" href="../../../macop/macop.callbacks.Callback.html#macop.callbacks.Callback.Callback.run">[docs]</a>    <span class="nd">@abstractmethod</span>
    <span class="k">def</span> <span class="nf">run</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
        <span class="sd">&quot;&quot;&quot;</span>
<span class="sd">        Check if necessary to do backup based on `every` variable</span>
<span class="sd">        &quot;&quot;&quot;</span>
        <span class="k">pass</span></div>

<div class="viewcode-block" id="Callback.load"><a class="viewcode-back" href="../../../macop/macop.callbacks.Callback.html#macop.callbacks.Callback.Callback.load">[docs]</a>    <span class="nd">@abstractmethod</span>
    <span class="k">def</span> <span class="nf">load</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
        <span class="sd">&quot;&quot;&quot;</span>
<span class="sd">        Load last backup line of solution and set algorithm state at this backup</span>
<span class="sd">        &quot;&quot;&quot;</span>
        <span class="k">pass</span></div></div>
</pre></div>

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