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‎a-armadilha-dos-argumentos-com-valores-padrao.html

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@@ -263,6 +263,17 @@ <h3>Como se proteger?</h3>
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</pre></div>
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<p>Ou, para deixar o código ainda mais elegante, podemos simplificar a condicional com um simples <code>or</code>:</p>
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<div class="highlight"><pre><span class="k">def</span> <span class="nf">my_function</span><span class="p">(</span><span class="n">my_list</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
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<span class="n">my_list</span> <span class="o">=</span> <span class="n">my_list</span> <span class="ow">or</span> <span class="p">[]</span>
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<span class="n">my_list</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
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<span class="k">print</span><span class="p">(</span><span class="n">my_list</span><span class="p">)</span>
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</pre></div>
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<blockquote>
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<p>Obrigado <a href="http://pythonclub.com.br/author/bruno-cezar-rocha.html">Bruno Rocha</a> pela sugestão.</p>
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</blockquote>
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<p>Pronto, sem surpresas e sem armadilhas :).</p>
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<div class="highlight"><pre><span class="o">&gt;&gt;&gt;</span> <span class="n">my_function</span><span class="p">()</span>
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<span class="p">[</span><span class="mi">1</span><span class="p">]</span>

‎a-armadilha-dos-argumentos-com-valores-padrao.html.gz

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‎feeds/all.atom.xml

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&lt;/pre&gt;&lt;/div&gt;
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&lt;p&gt;Ou, para deixar o código ainda mais elegante, podemos simplificar a condicional com um simples &lt;code&gt;or&lt;/code&gt;:&lt;/p&gt;
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&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span class="k"&gt;def&lt;/span&gt; &lt;span class="nf"&gt;my_function&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;my_list&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="bp"&gt;None&lt;/span&gt;&lt;span class="p"&gt;):&lt;/span&gt;
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&lt;span class="n"&gt;my_list&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="n"&gt;my_list&lt;/span&gt; &lt;span class="ow"&gt;or&lt;/span&gt; &lt;span class="p"&gt;[]&lt;/span&gt;
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&lt;span class="n"&gt;my_list&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;append&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
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&lt;span class="k"&gt;print&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;my_list&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
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&lt;/pre&gt;&lt;/div&gt;
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&lt;blockquote&gt;
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&lt;p&gt;Obrigado &lt;a href="http://pythonclub.com.br/author/bruno-cezar-rocha.html"&gt;Bruno Rocha&lt;/a&gt; pela sugestão.&lt;/p&gt;
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&lt;/blockquote&gt;
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&lt;p&gt;Pronto, sem surpresas e sem armadilhas :).&lt;/p&gt;
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&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span class="o"&gt;&amp;gt;&amp;gt;&amp;gt;&lt;/span&gt; &lt;span class="n"&gt;my_function&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt;
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&lt;span class="p"&gt;[&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="p"&gt;]&lt;/span&gt;

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‎feeds/all.rss.xml

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&lt;/pre&gt;&lt;/div&gt;
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&lt;p&gt;Ou, para deixar o código ainda mais elegante, podemos simplificar a condicional com um simples &lt;code&gt;or&lt;/code&gt;:&lt;/p&gt;
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&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span class="k"&gt;def&lt;/span&gt; &lt;span class="nf"&gt;my_function&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;my_list&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="bp"&gt;None&lt;/span&gt;&lt;span class="p"&gt;):&lt;/span&gt;
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&lt;span class="n"&gt;my_list&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="n"&gt;my_list&lt;/span&gt; &lt;span class="ow"&gt;or&lt;/span&gt; &lt;span class="p"&gt;[]&lt;/span&gt;
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&lt;span class="n"&gt;my_list&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;append&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
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&lt;span class="k"&gt;print&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;my_list&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
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&lt;/pre&gt;&lt;/div&gt;
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&lt;blockquote&gt;
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&lt;p&gt;Obrigado &lt;a href="http://pythonclub.com.br/author/bruno-cezar-rocha.html"&gt;Bruno Rocha&lt;/a&gt; pela sugestão.&lt;/p&gt;
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&lt;/blockquote&gt;
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&lt;p&gt;Pronto, sem surpresas e sem armadilhas :).&lt;/p&gt;
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&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span class="o"&gt;&amp;gt;&amp;gt;&amp;gt;&lt;/span&gt; &lt;span class="n"&gt;my_function&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt;
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&lt;span class="p"&gt;[&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="p"&gt;]&lt;/span&gt;

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‎feeds/anti-patterns.atom.xml

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&lt;p&gt;Ou, para deixar o código ainda mais elegante, podemos simplificar a condicional com um simples &lt;code&gt;or&lt;/code&gt;:&lt;/p&gt;
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&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span class="k"&gt;def&lt;/span&gt; &lt;span class="nf"&gt;my_function&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;my_list&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="bp"&gt;None&lt;/span&gt;&lt;span class="p"&gt;):&lt;/span&gt;
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&lt;span class="n"&gt;my_list&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="n"&gt;my_list&lt;/span&gt; &lt;span class="ow"&gt;or&lt;/span&gt; &lt;span class="p"&gt;[]&lt;/span&gt;
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&lt;span class="n"&gt;my_list&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;append&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
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&lt;span class="k"&gt;print&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;my_list&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
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&lt;/pre&gt;&lt;/div&gt;
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&lt;blockquote&gt;
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&lt;p&gt;Obrigado &lt;a href="http://pythonclub.com.br/author/bruno-cezar-rocha.html"&gt;Bruno Rocha&lt;/a&gt; pela sugestão.&lt;/p&gt;
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&lt;/blockquote&gt;
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&lt;p&gt;Pronto, sem surpresas e sem armadilhas :).&lt;/p&gt;
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&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span class="o"&gt;&amp;gt;&amp;gt;&amp;gt;&lt;/span&gt; &lt;span class="n"&gt;my_function&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt;
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&lt;span class="p"&gt;[&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="p"&gt;]&lt;/span&gt;

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‎feeds/diego-garcia.atom.xml

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&lt;p&gt;Ou, para deixar o código ainda mais elegante, podemos simplificar a condicional com um simples &lt;code&gt;or&lt;/code&gt;:&lt;/p&gt;
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&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span class="k"&gt;def&lt;/span&gt; &lt;span class="nf"&gt;my_function&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;my_list&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="bp"&gt;None&lt;/span&gt;&lt;span class="p"&gt;):&lt;/span&gt;
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&lt;span class="n"&gt;my_list&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="n"&gt;my_list&lt;/span&gt; &lt;span class="ow"&gt;or&lt;/span&gt; &lt;span class="p"&gt;[]&lt;/span&gt;
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&lt;span class="n"&gt;my_list&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;append&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
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&lt;span class="k"&gt;print&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;my_list&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
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&lt;/pre&gt;&lt;/div&gt;
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&lt;blockquote&gt;
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&lt;p&gt;Obrigado &lt;a href="http://pythonclub.com.br/author/bruno-cezar-rocha.html"&gt;Bruno Rocha&lt;/a&gt; pela sugestão.&lt;/p&gt;
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&lt;/blockquote&gt;
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&lt;p&gt;Pronto, sem surpresas e sem armadilhas :).&lt;/p&gt;
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&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span class="o"&gt;&amp;gt;&amp;gt;&amp;gt;&lt;/span&gt; &lt;span class="n"&gt;my_function&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt;
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&lt;span class="p"&gt;[&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="p"&gt;]&lt;/span&gt;

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&lt;p&gt;Ou, para deixar o código ainda mais elegante, podemos simplificar a condicional com um simples &lt;code&gt;or&lt;/code&gt;:&lt;/p&gt;
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&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span class="k"&gt;def&lt;/span&gt; &lt;span class="nf"&gt;my_function&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;my_list&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="bp"&gt;None&lt;/span&gt;&lt;span class="p"&gt;):&lt;/span&gt;
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&lt;span class="n"&gt;my_list&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="n"&gt;my_list&lt;/span&gt; &lt;span class="ow"&gt;or&lt;/span&gt; &lt;span class="p"&gt;[]&lt;/span&gt;
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&lt;span class="n"&gt;my_list&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;append&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
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&lt;span class="k"&gt;print&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;my_list&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
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&lt;/pre&gt;&lt;/div&gt;
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&lt;blockquote&gt;
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&lt;p&gt;Obrigado &lt;a href="http://pythonclub.com.br/author/bruno-cezar-rocha.html"&gt;Bruno Rocha&lt;/a&gt; pela sugestão.&lt;/p&gt;
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&lt;/blockquote&gt;
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&lt;p&gt;Pronto, sem surpresas e sem armadilhas :).&lt;/p&gt;
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&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span class="o"&gt;&amp;gt;&amp;gt;&amp;gt;&lt;/span&gt; &lt;span class="n"&gt;my_function&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt;
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&lt;span class="p"&gt;[&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="p"&gt;]&lt;/span&gt;

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