title: ImportError: No module named data_io
body: <p>l'm under python2.7 l can't import data_io l got this error : </p>
  
  <pre><code>ImportError: No module named data_io
  </code></pre>
  
  <p>Here is my code</p>
  
  <pre><code>import data_io
  reload(data_io)
  data = data_io.read_as_df(basename)  
  </code></pre>