title: Data type not understood while creating a NumPy array
body: <p>I am trying to create a 2 * 3 numpy array as below:</p>
  
  <pre><code>x_sample= np.array([31000,28.69,7055.47],[79000,3.9,16933.26]);
  </code></pre>
  
  <p>But I get:</p>
  
  <pre><code>TypeError: data type not understood
  </code></pre>
  
  <p>Why am I getting the error?</p>