is it possible to see if a class has a decorator ?

[Jean-Michel Pichavant]

Stef Mientki wrote:
> On 06-12-2010 12:08, Ben Finney wrote:
>> Stef Mientki <stef.mientki at gmail.com> writes:
>>
>>     
>>> I would like to know if a class definition has a decorator,
>>>       
>> I'm not sure what this question means.
>>
>> Applying a decorator to a class definition produces a normal class.
>>
>> Classes don't “have” decorators; classes can be returned by a decorator
>> function, but AFAIK the resulting class doesn't “have” the decorator in
>> any sense.
>>
>>     
>>> is that possible ?
>>>       
>> The return value of a decorator isn't special in any way, AFAIK.
>>
>> Any function can return a class object or a function object, and any
>> function can be used as a decorator.
>>
>> The only thing that makes a function a decorator is how it is used in
>> the code; but it doesn't leave a trace that I know of.
>>
>> Now, what is it you're trying to do? Perhaps there's a better solution
>> we can come up with.
>>
>>     
> Thanks Ben,
> here some more explanation.
>
> I've a number of (dynamic) applications,
> launched from a central wrapper.
> All these modules have a class "Start", which launches the application 
> and embeds them in the wrapper application.
>
> Module 1:
> class Start ():
>     ....
>
> Module 2:
> @auth
> class Start ():
>     ...
>
> When the wrapper application is started, it looks for all dynamic 
> modules (without importing them),
> and list these application in a hierarchical tree.
> In the above axmple,
> I would like to know that the class "Start" in Module 2 has the 
> decorator  "Auth", *without importing the module*,
> (so depending on the user logged in, I can decide to add or not add 
> the module to the hierarchical tree).
>
> thanks,
> Stef Mientki
>
>
>
>  
You best bet is to parse the source file.

JM