title: numpy tostring equivalent to numpy fromstring
body: <p>Numpy has a neat function <a href="http://docs.scipy.org/doc/numpy/reference/generated/numpy.fromstring.html" rel="nofollow"><code>numpy.fromstring</code></a>.</p>
  
  <p>It also seems to have a neat function <a href="http://docs.scipy.org/doc/numpy/reference/generated/numpy.chararray.tostring.html" rel="nofollow"><code>numpy.chararray.tostring</code></a>.</p>
  
  <p>How do I convert <code>\x00\x00\x00\x00\x01\x00\x00\x00\x02\x00\x00\x00\x03\x00\x00\x00</code> to a normal ASCII string, which I can write to a file?</p>