title: Python3 AttributeError: 'list' object has no attribute 'clear'
body: <p>I am working on a Linux machine with Python version 3.2.3. 
  Whenever I try to do <code>list.clear()</code> I get an exception </p>
  
  <pre><code>&gt;&gt;&gt; l = [1, 2, 3, 4, 5, 6, 7]
  &gt;&gt;&gt; l.clear()
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  AttributeError: 'list' object has no attribute 'clear'
  </code></pre>
  
  <p>At the same time on my Mac with Python 3.4.3 the same code runs smoothly. 
  Can it be due to the difference between Python versions or is there something I'm missing? </p>