title: numpy, how do I find total rows in a 2D array and total column in a 1D array
body: <p>Hi apologies for the newbie question, but I'm wondering if someone can help me with two questions. 
  Example say I have this, </p>
  
  <p>[[1,2,3],[10,2,2]]</p>
  
  <p>I have two questions. </p>
  
  <ul>
  <li>How do I find total columns:  </li>
  <li>How do I find total rows: </li>
  </ul>
  
  <p>thank you very much. 
  A</p>