Class mutation

[Dale Strickland-Clark]

"Thomas Heller" <thomas.heller at ion-tof.com> wrote:

>"Dale Strickland-Clark" <dale at riverhall.NOSPAMco.uk> wrote in message news:8626rt838oe59d1njrtrisccm0oe02shvf at 4ax.com...
>> Lets say we have a class 'Job' and another class derived from that
>> 'ActiveJob'.
>>
>> I'd like to mutate a Job object into the extended ActiveJob object
>> without re-assigning all the attributes.
>>
>class Job:
>    def work(self):
>        print "I'm inactive"
>
>class ActiveJob(Job):
>    def work(self):
>        print "Ok, later"
>
>job = Job()
>
>print job
>job.work()
>
>job.__class__ = ActiveJob
>
>print job
>job.work()
>
>prints:
>
><__main__.Job instance at 007B5EBC>
>I'm inactive
>
><__main__.ActiveJob instance at 007B5EBC>
>Ok, later
>
>Thomas
>

Interesting but looks doomed (See other comment.).

Thanks
--
Dale Strickland-Clark
Riverhall Systems Ltd