title: In Python error on sys.stdin.fileno()
body: <p>I get the error when I run <code>sys.stdin.fileno()</code></p>
  
  <pre><code>Traceback (most recent call last):
    File "&lt;pyshell#1&gt;", line 1, in &lt;module&gt;
      sys.stdin.fileno()
  io.UnsupportedOperation: fileno
  </code></pre>