title: Boolean to string with lowercase
body: <p>Can the <code>str.format()</code> method print boolean arguments without capitalized strings?</p>
  
  <p>I cannot use <code>str(myVar).lower()</code> as argument of format, because I want to preserve the case of the letters when <code>myVar</code> is not a boolean.</p>
  
  <p>Please don't post solutions with conditional checks of the values of the variable.</p>
  
  <p>All I am interested is in the possibility of writing the following:</p>
  
  <pre><code>"Bla bla bla {}".format(myVar)
  </code></pre>
  
  <p>so that the output becomes <code>"Bla bla bla true"</code> when <code>myVar == True</code> and <code>"Bla bla bla false"</code> when <code>myVar == false</code></p>