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Feat(Programmation): Fin du tp simulation en python

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Bertrand Benjamin
2019-01-07 08:57:46 +01:00
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PreStSauveur/Programmation/Simuations.html
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<h1 id="&#201;chauffements">&#201;chauffements<a class="anchor-link" href="#&#201;chauffements">&#182;</a></h1><p>Copier-coller ligne par ligne le programme suivant en corrigeant les éventuelles erreurs. Une fois le programme relu et corrigé, proposer puis coder une amélioration.</p>
<h1 id="&#201;chauffements">&#201;chauffements<a class="anchor-link" href="#&#201;chauffements">&#182;</a></h1><ul>
<li>[ ] Copier-coller blocspar blocs le programme suivant en corrigeant les éventuelles erreurs (il y en a au moins une par bloc).</li>
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<div class=" highlight hl-ipython3"><pre><span></span>
<div class=" highlight hl-ipython3"><pre><span></span><span class="s2">&quot;Je veux calculer le périmètre et l&#39;aire de cercles&quot;</span>
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<div class=" highlight hl-ipython3"><pre><span></span><span class="kn">import</span> <span class="nn">math</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Pour cela j&#39;ai besoin de Pi&quot;</span><span class="p">)</span>
<span class="n">pi</span> <span class="o">=</span> <span class="mf">3.14</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Je sais que pi vaut pi&quot;</span><span class="p">)</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Mais Python connait une valeur approchée plus précise de pi, elle vaut&quot;</span><span class="p">,</span> <span class="n">math</span><span class="o">.</span><span class="n">pi</span><span class="p">)</span>
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<div class=" highlight hl-ipython3"><pre><span></span><span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Je veux calculer le périmètre d&#39;un cercle&quot;</span><span class="p">)</span>
<span class="n">rayon</span> <span class="o">=</span> <span class="mi">3</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Quand le rayon vaut&quot;</span><span class="p">,</span> <span class="n">rayon</span><span class="p">,</span> <span class="s2">&quot;le périmètre vaut&quot;</span><span class="p">,</span> <span class="mi">2</span><span class="o">*</span><span class="n">math</span><span class="o">.</span><span class="n">pi</span><span class="o">*</span><span class="mi">5</span><span class="p">)</span>
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<div class=" highlight hl-ipython3"><pre><span></span><span class="nb">print</span><span class="p">(</span><span class="s2">&quot;On peut en faire une fonction&quot;</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">perimetre</span><span class="p">(</span><span class="n">rayon</span><span class="p">)</span>
<span class="k">return</span> <span class="mi">4</span><span class="o">*</span><span class="n">math</span><span class="o">.</span><span class="n">pi</span><span class="o">*</span><span class="n">rayon</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Le périmètre d&#39;un cercle de rayon 2 est &quot;</span><span class="p">,</span> <span class="n">perimetre</span><span class="p">(</span><span class="mi">2</span><span class="p">))</span>
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<ul>
<li>[ ] Ecrire une fonction qui calcule l'aire d'un cercle à partir de son rayon.</li>
<li>[ ] Copier-coller, tester ce bloc puis expliquer avec # ce qu'il fait.</li>
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<div class=" highlight hl-ipython3"><pre><span></span><span class="n">rayon</span> <span class="o">=</span> <span class="mi">10</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;J&#39;ai un cercle de rayon&quot;</span><span class="p">,</span> <span class="n">rayon</span><span class="p">)</span>
<span class="k">if</span> <span class="n">rayon</span> <span class="o">&lt;</span> <span class="mi">50</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;C&#39;est un petit cercle.&quot;</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;C&#39;est un grand cercle!&quot;</span><span class="p">)</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Son périmètre vaut&quot;</span><span class="p">,</span> <span class="n">perimetre</span><span class="p">(</span><span class="n">rayon</span><span class="p">))</span>
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<div class=" highlight hl-ipython3"><pre><span></span><span class="kn">from</span> <span class="nn">random</span> <span class="k">import</span> <span class="n">random</span><span class="p">,</span> <span class="n">randint</span><span class="p">,</span> <span class="n">uniform</span><span class="p">,</span> <span class="n">choice</span>
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<pre>0.5282588961960093</pre>
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<div class=" highlight hl-ipython3"><pre><span></span><span class="n">randint</span><span class="p">(</span><span class="mi">4</span><span class="p">,</span> <span class="mi">10</span><span class="p">)</span>
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<pre>8</pre>
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<div class=" highlight hl-ipython3"><pre><span></span><span class="n">uniform</span><span class="p">(</span><span class="mi">4</span><span class="p">,</span> <span class="mi">10</span><span class="p">)</span>
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<pre>6.374949885924709</pre>
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<div class=" highlight hl-ipython3"><pre><span></span><span class="c1"># Pour définir une liste, on utilise des crochets []</span>
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<pre>&#39;français&#39;</pre>
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