title: Python how to combine two matrices in numpy
body: <p>new to Python, struggling in numpy, hope someone can help me, thank you!</p>
  
  <pre><code>from numpy  import *   
  A = matrix('1.0 2.0; 3.0 4.0')    
  B = matrix('5.0 6.0')
  C = matrix('1.0 2.0; 3.0 4.0; 5.0 6.0')
  print "A=",A
  print "B=",B
  print "C=",C
  </code></pre>
  
  <p>results:</p>
  
  <pre><code>A= [[ 1.  2.]
     [ 3.  4.]]
  B= [[ 5.  6.]]
  C= [[ 1.  2.]
     [ 3.  4.]
     [ 5.  6.]]
  </code></pre>
  
  <p>Question: how to use A and B to generate C, like in matlab <code>C=[A;B]</code>?</p>