title: open .dat file in python
body: <p>I have a .dat file and I want to generate the content in python, thus I use the following code:</p>
  
  <pre><code>import numpy as np
  
  bananayte=np.fromfile("U04_banana-ytest.dat",dtype=float)
  print(bananayte)
  </code></pre>
  
  <p>However, my initial data should be like "1.0000000e+00", while the output is like "1.39804066e-76". What happened? and what should I do to get the correct value? Thanks!</p>