title: Creating a 4d matrix full of zeros in python, numpy
body: <p>I am trying to create a 4 dimensional matrix in python using the following code;</p>
  
  <pre><code>import numpy as np
  rho=np.zeros(2,2,2,2)
  </code></pre>
  
  <p>But I get the following error;</p>
  
  <pre><code>    rho=np.zeros(2,2,2,2)
  TypeError: function takes at most 3 arguments (4 given)
  </code></pre>
  
  <p>This seems to work in matlab, but not here. Any help would be appreciated, 
  Thanks!</p>