title: Python list with constant value
body: <p>I really love pythons possibility to shorten things up with its shorthand for loops — but sometimes, I need to obtain a list containing one value multiple times, which I did the following way:</p>
  
  <pre><code>plot(seconds, [z0 for s in seconds], '--')
  </code></pre>
  
  <p>But that unused <code>s</code> really disturbs me for aesthetic reasons.</p>
  
  <p>Is there any shorter (and more beautiful) way of doing so? Like some special “multiplication” of some value?</p>