title: How can I remove all trailing dashes from a string?
body: <p>Example:</p>
  
  <pre><code>string1 = 'title--'
  string2 = 'title-'
  string3 = 'this-is-a-title----'
  
  &gt;&gt; print doSomething(string1)
  &gt;&gt; title
  
  &gt;&gt; print doSomething(string2)
  &gt;&gt; title
  
  &gt;&gt; print doSomething(string3)
  &gt;&gt; this-is-a-title
  </code></pre>