<!DOCTYPE qhelp PUBLIC

"-//Semmle//qhelp//EN"

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<qhelp>

<overview>

<p>The <code>__init__</code> method of a class is used to initialize new objects,

not create them. As such, it should not return any value.

By including a <code>yield</code> expression in the method turns it into a generator method.

On calling it will return a generator resulting in a runtime error.</p>

</overview>

<recommendation>

<p>The presence of a <code>yield</code> expression in an <code>__init__</code> method

suggests a logical error, so it is not possible to suggest a general fix.</p>

</recommendation>

<example>

<p>In this example the <code>__init__</code> method contains a yield expression. This is

not logical in the context of an initializer.</p>

<sample src="InitIsGenerator.py" />

</example>

<references>

<li>Python: <a href="http://docs.python.org/3/reference/datamodel.html#object.__init__">The __init__ method</a>.</li>

</references>

</qhelp>