title: Index of multiple minimum elements in a list
body: <p>I want a list</p>
  
  <pre><code>a = [2,4,5,2]
  </code></pre>
  
  <p>to give</p>
  
  <pre><code>b = [0, 3]
  </code></pre>
  
  <p>I know how to do it for when there is only a single min element, but not multiple min elements.
  example:</p>
  
  <pre><code>b = a.index(min(a))
  </code></pre>
  
  <p>This will give me <code>b = 0</code>. </p>