title: Convert a matrix to a list
body: <p>I'm working with numpy using a matrix that is 1x3. My question is:<br>
  Exists a way to convert that matrix into a tuple that contains the elements of the matrix in order? For example, if the matrix is</p>
  
  <pre><code>A=matrix([[1,2,3]])
  </code></pre>
  
  <p>get</p>
  
  <pre><code>B=(1,2,3)
  </code></pre>