title: How to print an initialized 2D array?
body: <p>I want to print an initialized 2D array.
  I have tried this, but it is wrong</p>
  
  <pre><code>&gt;&gt;&gt;a=[[1,43,2], [12,3,42]]
  &gt;&gt;&gt;Print a
  </code></pre>
  
  <p>What is my mistake? </p>