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<section id="randoms-py-exploring-random-generators">
<h1>06-randoms.py - Exploring random generators.<a class="headerlink" href="#randoms-py-exploring-random-generators" title="Permalink to this heading">¶</a></h1>
<p>This example presents two more generators that randomly choose values.</p>
<p><strong>EventChoice</strong></p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">EventChoice</span><span class="p">(</span><span class="n">values</span><span class="p">,</span> <span class="n">occurrences</span><span class="o">=</span><span class="n">inf</span><span class="p">,</span> <span class="n">stopEventsWhenDone</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
</pre></div>
</div>
<p>EventChoice randomly pick a new value in a list of possible values.</p>
<p><strong>EventDrunk</strong></p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">EventDrunk</span><span class="p">(</span><span class="n">values</span><span class="p">,</span> <span class="n">maxStep</span><span class="o">=</span><span class="mi">2</span><span class="p">,</span> <span class="n">occurrences</span><span class="o">=</span><span class="n">inf</span><span class="p">,</span> <span class="n">stopEventsWhenDone</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
</pre></div>
</div>
<p>EventDrunk performs a random walk over a list of values. The ‘maxStep’
argument determine the larger step in the list the walk can do between
two successive events. A negative ‘maxStep’ is the same but repetition
are not allowed.</p>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span> <a class="sphinx-codeautolink-a" href="../../api/alphabetical.html#module-pyo" title="pyo"><span class="nn">pyo</span></a> <span class="kn">import</span> <span class="o">*</span>

<span class="n">s</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/server.html#pyo.Server" title="pyo.lib.server.Server"><span class="n">Server</span></a><span class="p">()</span><span class="o">.</span><span class="n">boot</span><span class="p">()</span>

<span class="n">scl</span> <span class="o">=</span> <span class="p">[</span><span class="mf">5.00</span><span class="p">,</span> <span class="mf">5.02</span><span class="p">,</span> <span class="mf">5.03</span><span class="p">,</span> <span class="mf">5.05</span><span class="p">,</span> <span class="mf">5.07</span><span class="p">,</span> <span class="mf">5.08</span><span class="p">,</span> <span class="mf">5.10</span><span class="p">,</span> <span class="mf">6.00</span><span class="p">,</span> <span class="mf">6.02</span><span class="p">,</span> <span class="mf">6.03</span><span class="p">,</span> <span class="mf">6.05</span><span class="p">,</span> <span class="mf">6.07</span><span class="p">]</span>

<span class="c1"># Random walk for the melody.</span>
<span class="n">e1</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/events.html#pyo.Events" title="pyo.lib.events.Events"><span class="n">Events</span></a><span class="p">(</span>
    <span class="n">degree</span><span class="o">=</span><a class="sphinx-codeautolink-a" href="../../api/classes/events.html#pyo.EventDrunk" title="pyo.lib.events.EventDrunk"><span class="n">EventDrunk</span></a><span class="p">(</span><span class="n">scl</span><span class="p">,</span> <span class="n">maxStep</span><span class="o">=-</span><span class="mi">2</span><span class="p">),</span> <span class="n">beat</span><span class="o">=</span><span class="mi">1</span> <span class="o">/</span> <span class="mf">4.0</span><span class="p">,</span> <span class="n">db</span><span class="o">=-</span><span class="mi">6</span><span class="p">,</span> <span class="n">attack</span><span class="o">=</span><span class="mf">0.001</span><span class="p">,</span> <span class="n">decay</span><span class="o">=</span><span class="mf">0.05</span><span class="p">,</span> <span class="n">sustain</span><span class="o">=</span><span class="mf">0.5</span><span class="p">,</span> <span class="n">release</span><span class="o">=</span><span class="mf">0.005</span><span class="p">,</span>
<span class="p">)</span><span class="o">.</span><span class="n">play</span><span class="p">()</span>

<span class="c1"># Choose randomly for the bass.</span>
<span class="n">e2</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/events.html#pyo.Events" title="pyo.lib.events.Events"><span class="n">Events</span></a><span class="p">(</span>
    <span class="n">degree</span><span class="o">=</span><a class="sphinx-codeautolink-a" href="../../api/classes/events.html#pyo.EventChoice" title="pyo.lib.events.EventChoice"><span class="n">EventChoice</span></a><span class="p">(</span><span class="n">scl</span><span class="p">),</span> <span class="n">beat</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">db</span><span class="o">=-</span><span class="mi">6</span><span class="p">,</span> <span class="n">transpo</span><span class="o">=-</span><span class="mi">12</span><span class="p">,</span> <span class="n">attack</span><span class="o">=</span><span class="mf">0.001</span><span class="p">,</span> <span class="n">decay</span><span class="o">=</span><span class="mf">0.05</span><span class="p">,</span> <span class="n">sustain</span><span class="o">=</span><span class="mf">0.5</span><span class="p">,</span> <span class="n">release</span><span class="o">=</span><span class="mf">0.005</span><span class="p">,</span>
<span class="p">)</span><span class="o">.</span><span class="n">play</span><span class="p">()</span>

<span class="n">s</span><span class="o">.</span><span class="n">gui</span><span class="p">(</span><span class="nb">locals</span><span class="p">())</span>
</pre></div>
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