SuperInOldStyleClass.qhelp

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<overview>
<p>The ability to access inherited methods that have been overridden in a class using <code>super()</code> 
is supported only by new-style classes. When you use the <code>super()</code> function in an old-style 
class it fails.</p>

</overview>
<recommendation>
<p>If you want to access inherited methods using the <code>super()</code> built-in, then ensure that 
the class is a new-style class. You can convert an old-style class to a new-style class by inheriting 
from <code>object</code>. Alternatively, you can call the <code>__init__</code> method of the superclass 
directly from an old-style class using: <code>BaseClass.__init__(...)</code>.</p>

</recommendation>
<example>
<p>In the following example, <code>PythonModule</code> is an old-style class as it inherits from another 
old-style class. If the <code>_ModuleIteratorHelper</code> class cannot be converted into a new-style 
class, then the call to <code>super()</code> must be replaced. The <code>PythonModule2</code> class 
demonstrates the correct way to call a superclass from an old-style class.</p>

<sample src="SuperInOldStyleClass.py" />


</example>
<references>

<li>Python Glossary: <a href="http://docs.python.org/glossary.html#term-new-style-class">New-style class</a>.</li>
<li>Python Language Reference: <a href="http://docs.python.org/2/reference/datamodel.html#newstyle">New-style and classic 
classes</a>.</li>
<li>Python Standard Library: <a href="http://docs.python.org/library/functions.html#super">super</a>.</li>


</references>
</qhelp>