title: How to read text file on python and get values from it to set it on an array
body: <p>I have a text file which have the following structure:</p>
  <p>&lt; example_name&gt;TAB&lt; probability &gt;TAB&lt; prediction&gt;</p>
  <p>This an example of this file:</p>
  <blockquote>
  <p>Q1_R1 0.00390625  true</p>
  <p>Q1_R2 0.0078125   false</p>
  <p>Q1_R3 0.001953125 false</p>
  <p>Q1_R4 0.125   true</p>
  </blockquote>
  <p>I'm using the environment Anaconda2 (Python Version 2.7) especially the scikit-learn tools, and my question is:
  How can i load this text file and put the values of the element &lt; probability&gt; on an array to do other operations ?</p>