title: How to multiply a list of strings by a list of integers?
body: <p>I want to multiply <code>a * b</code>:</p>
  
  <pre><code>a = ['a', 'e', 'y']    
  b = [3, 2, 1]
  </code></pre>
  
  <p>and get:</p>
  
  <pre><code>c = ['a', 'a', 'a', 'e', 'e', 'y']
  </code></pre>