title: Append a column to a 2 dimensional array
body: <p>I have a 2d array in Python called "AllLines"</p>
  
  <pre><code>[['Suppliers', 'Spend', 'Test Field\n'], 
   ['Dell Inc', '9000', '1\n'], 
   ['Dell Computers', '9000', '2\n'], 
   ['HBC Corp', '9000', '3\n'], 
   ['HBC INC', '9000', '4']]
  </code></pre>
  
  <p>So, it is an array within an array. I need to append items to the inside array. To give me this:</p>
  
  <pre><code>[['NEW','Suppliers', 'Spend', 'Test Field\n'], 
   ['N-E-W','Dell Inc', '9000', '1\n'], 
   ['N-E-W---','Dell Computers', '9000', '2\n'], 
   ['N-E---W','HBC Corp', '9000', '3\n'], 
   ['N-W-W','HBC INC', '9000', '4']]
  </code></pre>
  
  <p>How do I achieve adding a new item to the inside arrays?</p>