title: Find length of 2D array Python
body: <p>How do I find how many rows and columns are in a 2d array?
  <br></p>
  
  <p>For example,</p>
  
  <pre><code>Input = ([[1, 2], [3, 4], [5, 6]])`
  </code></pre>
  
  <p>should be displayed as 3 rows and 2 columns.</p>