title: Python nested list slicing
body: <p>My list:</p>
  
  <pre><code>&gt;&gt;&gt; l = [["A", "A1", 1, 2, 3], 
           ["B", "A2", 4, 5, 6], 
           ["C", "A3", 7, 8, 9], 
           ["D", "A4", 10, 11, 12]]
  </code></pre>
  
  <p>Slicing operation:</p>
  
  <pre><code>&gt;&gt;&gt; [[n[0] for n in l], [u[1:] for u in l]]
  [['A', 'B', 'C', 'D'], 
    [['A1', 1, 2, 3], 
    ['A2', 4, 5, 6], 
    ['A3', 7, 8, 9], 
    ['A4', 10, 11, 12]]]
  </code></pre>
  
  <p>Is any way to slice this list without extra square brackets? like below:</p>
  
  <pre><code>[['A', 'B', 'C', 'D'], 
   ['A1', 1, 2, 3], 
   ['A2', 4, 5, 6], 
   ['A3', 7, 8, 9], 
   ['A4', 10, 11, 12]]
  </code></pre>