title: print syntax error with python 3
body: <p>After installing python 3.1, I cannot print anything. Here is an example:</p>
  
  <pre><code>&gt;&gt;&gt; print "Hello World"
    File "&lt;stdin&gt;", line 1
      print "Hello World"
                        ^
  SyntaxError: invalid syntax
  &gt;&gt;&gt;
  </code></pre>
  
  <p>How do I fix this error?</p>