title: Convert float64 numpy array to floats not in scientific notation
body: <p>I currently have a numpy array of float64s:</p>
  
  <pre><code>[ -2.75090260e-08   3.11586226e-08   1.86128266e-08  -1.01560789e-07 ]
  </code></pre>
  
  <p>which I would like to print as for an excel spreadsheet import:</p>
  
  <pre><code>[ -.0000000275090260   .0000000311586226   .0000000186128266   -.000000101560789 ]
  </code></pre>
  
  <p>I've tried messing about with precision settings, but each number has its own mantissa and exponent.</p>
  
  <p>Note that these output numbers can be considered a string if that makes the process easier, as they are going into a text file for excel.</p>