title: Subclass of ConfigParser has no attribute _sections
body: <p>I am trying to subclass ConfigParser. When trying to access <code>_sections</code> it says</p>
  
  <pre><code>'acc' object has no attribute '_sections'
  </code></pre>
  
  <p>Example Code(python 2.7):</p>
  
  <pre><code>import ConfigParser
  class acc(object, ConfigParser.RawConfigParser):
      def __init__(self, acc_file):
              super(acc,self).__init__()
              self.lol = 1
              print self.has_section(self.lol)
  
  a=acc(1)
  </code></pre>