title: Print polynomial in variable format in python
body: <pre><code>from numpy import linalg,dot
  import numpy.polynomial.polynomial as poly
  x7=poly.Polynomial([1,2])
  print x7
  </code></pre>
  
  <p>according to above code in python it should print
  1 + 2x^2, but it is printing poly [1. 2.]. Please help.</p>