title: Python's function readlines(n) behavior
body: <p>I've read <a href="http://docs.python.org/2/tutorial/inputoutput.html#methods-of-file-objects" rel="nofollow noreferrer"><strong>the documentation</strong></a>, but what does <code>readlines(n)</code> do?  By <code>readlines(n)</code>, I mean <code>readlines(3)</code> or any other number.</p>
  <p>When I run <code>readlines(3)</code>, it returns same thing as <code>readlines()</code>.</p>