title: How can I slice a list till end with negative indexes
body: <p>I learned that Python lists can also be traversed using negative index, so I tried to slice/sublist a list using negative index, but I cannot slice it till end. </p>
  
  <p>My list is:</p>
  
  <pre><code>areas = ["hallway", 11.25, "kitchen", 18.0, "living room", 20.0, "bedroom", 10.75, "bathroom", 9.50]
  </code></pre>
  
  <p>Knowing that slicing syntax is <code>[start:end]</code> and end index is not calculated, I did <code>upstairs = areas[-4:0]</code> but this doesn't give me last element of the list.</p>