title: Plotting a list of Complex nos on Z-plane in python
body: <p>I tried:</p>
  
  <pre><code>plot(z)
  </code></pre>
  
  <p>where <code>z</code> is a list of complex numbers, which plots <code>abs(z)</code> versus index.</p>
  
  <pre><code>plot( z.real, z.imag )
  </code></pre>
  
  <p>doesn't work, it says <code>list</code> doesn't have attribute <code>real</code>.</p>