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POPython instancemethods & decorators
 

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  1. POPython instancemethods & decorators
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    <p>I've got the following problem:</p> <p>I need to write a decorator that would be able to detect a situation where it is used around a method and around a regular function.</p> <p>So let's consider the following code:</p> <pre><code>def somedecorator(fn): print "decorating function:", fn print "function class:", fn.__class__ return fn @somedecorator def regular_func(): print "I'm a regular function" class SomeClass(object): @somedecorator def class_method(self): print "I'm a class method" </code></pre> <p>The output reads:</p> <pre><code>decorating function: &lt;function regular_func at 0x181d398&gt; function class: &lt;type 'function'&gt; decorating function: &lt;function class_method at 0x181d410&gt; function class: &lt;type 'function'&gt; </code></pre> <p>However writing:</p> <pre><code>print regular_func print SomeClass.class_method print SomeClass().class_method </code></pre> <p>Produces output:</p> <pre><code>&lt;function regular_func at 0x181d398&gt; &lt;unbound method SomeClass.class_method&gt; &lt;bound method SomeClass.class_method of &lt;__main__.SomeClass object at 0x16d9e50&gt;&gt; </code></pre> <p>So as it turns out (not so surprisingly) that decorators are applied to functions before they are turned into methods. </p> <p>Question: What would you suggest to distinguish the two applications from the decorator point of view?</p> <p><strong>EDIT</strong> For the curious ones - I need the described distinction because of pickling. I don't really want to go into details on this one.</p>
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    1. CO"What would you suggest to overcome this?" Overcome what? It seems to work perfectly. What would you like that's somehow different from this?
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    2. CO@S.Lott As I've written above I need to write a decorator that can distinguish the two situation (being applied to a method and being applied to a regular function). I reformulated my question
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    3. COpossible duplicate of [How to differentiate between method and function in a decorator?](http://stackoverflow.com/questions/2435764/how-to-differentiate-between-method-and-function-in-a-decorator)
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      1. POPython instancemethods & decorators
      1. USIgnacio Vazquez-Abrams
 

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